diff --git a/json/src/com/jetbrains/jsonSchema/JsonSchemaFileType.java b/json/src/com/jetbrains/jsonSchema/JsonSchemaFileType.java
index c337929499fe..ce35bd313bde 100644
--- a/json/src/com/jetbrains/jsonSchema/JsonSchemaFileType.java
+++ b/json/src/com/jetbrains/jsonSchema/JsonSchemaFileType.java
@@ -22,6 +22,7 @@ import com.intellij.openapi.fileTypes.ex.FileTypeIdentifiableByVirtualFile;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.project.ProjectUtil;
 import com.intellij.openapi.vfs.VirtualFile;
+import com.jetbrains.jsonSchema.ide.JsonSchemaService;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -64,6 +65,6 @@ public class JsonSchemaFileType extends LanguageFileType implements FileTypeIden
   @Override
   public boolean isMyFileType(@NotNull VirtualFile file) {
     final Project project = ProjectUtil.guessProjectForFile(file);
-    return project != null && JsonSchemaMappingsProjectConfiguration.getInstance(project).isRegisteredSchemaFile(file);
+    return project != null && JsonSchemaService.Impl.get(project).isRegisteredSchemaFile(project, file);
   }
 }
diff --git a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaFileProvider.java b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaFileProvider.java
index fd9475873c24..2f94b81ed6dd 100644
--- a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaFileProvider.java
+++ b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaFileProvider.java
@@ -1,11 +1,12 @@
 package com.jetbrains.jsonSchema.extension;
 
 
+import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import org.jetbrains.annotations.NotNull;
 
 public interface JsonSchemaFileProvider {
-  boolean isAvailable(@NotNull VirtualFile file);
+  boolean isAvailable(@NotNull Project project, @NotNull VirtualFile file);
 
   @NotNull
   String getName();
diff --git a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaImportedProviderFactory.java b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaImportedProviderFactory.java
index 1bb4ea9cca59..79728a6ab629 100644
--- a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaImportedProviderFactory.java
+++ b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaImportedProviderFactory.java
@@ -135,7 +135,7 @@ public class JsonSchemaImportedProviderFactory implements JsonSchemaProviderFact
     }
 
     @Override
-    public boolean isAvailable(@NotNull VirtualFile file) {
+    public boolean isAvailable(@NotNull Project project, @NotNull VirtualFile file) {
       if (myPatterns.isEmpty() || file.isDirectory() || !file.isValid() ||
           myProject != null && JsonSchemaMappingsProjectConfiguration.getInstance(myProject).isRegisteredSchemaFile(file)) return false;
       for (Processor<VirtualFile> pattern : myPatterns) {
diff --git a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaProjectSelfProviderFactory.java b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaProjectSelfProviderFactory.java
index b9a3f3152453..e079613e4db5 100644
--- a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaProjectSelfProviderFactory.java
+++ b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaProjectSelfProviderFactory.java
@@ -15,7 +15,6 @@
  */
 package com.jetbrains.jsonSchema.extension;
 
-import com.intellij.openapi.components.ServiceManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Pair;
@@ -23,6 +22,7 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.jetbrains.jsonSchema.JsonSchemaFileType;
 import com.jetbrains.jsonSchema.JsonSchemaMappingsProjectConfiguration;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Collections;
 import java.util.List;
@@ -30,35 +30,27 @@ import java.util.List;
 /**
  * @author Irina.Chernushina on 2/24/2016.
  */
-public class JsonSchemaProjectSelfProviderFactory {
+public class JsonSchemaProjectSelfProviderFactory implements JsonSchemaProviderFactory {
   private static final Logger LOG = Logger.getInstance("#com.jetbrains.jsonSchema.extension.JsonSchemaProjectSelfProviderFactory");
   public static final String SCHEMA_JSON_FILE_NAME = "schema.json";
   private final List<JsonSchemaFileProvider> myProviders;
 
-  public static JsonSchemaProjectSelfProviderFactory getInstance(final Project project) {
-    return ServiceManager.getService(project, JsonSchemaProjectSelfProviderFactory.class);
+  public JsonSchemaProjectSelfProviderFactory() {
+    myProviders = Collections.singletonList(new MyJsonSchemaFileProvider());
   }
 
-  public JsonSchemaProjectSelfProviderFactory(final Project project) {
-    myProviders = Collections.singletonList(new MyJsonSchemaFileProvider(project));
-  }
-
-  public List<JsonSchemaFileProvider> getProviders() {
+  @Override
+  public List<JsonSchemaFileProvider> getProviders(@Nullable Project project) {
     return myProviders;
   }
 
   private static class MyJsonSchemaFileProvider implements JsonSchemaFileProvider {
     public static final Pair<SchemaType, Object> KEY = Pair.create(SchemaType.schema, SchemaType.schema);
-    private final Project myProject;
-
-    public MyJsonSchemaFileProvider(Project project) {
-      myProject = project;
-    }
 
     @Override
-    public boolean isAvailable(@NotNull VirtualFile file) {
-      if (myProject == null || !JsonSchemaFileType.INSTANCE.equals(file.getFileType())) return false;
-      return JsonSchemaMappingsProjectConfiguration.getInstance(myProject).isRegisteredSchemaFile(file);
+    public boolean isAvailable(@NotNull Project project, @NotNull VirtualFile file) {
+      if (!JsonSchemaFileType.INSTANCE.equals(file.getFileType())) return false;
+      return JsonSchemaMappingsProjectConfiguration.getInstance(project).isRegisteredSchemaFile(file);
     }
 
     @NotNull
@@ -69,29 +61,12 @@ public class JsonSchemaProjectSelfProviderFactory {
 
     @Override
     public VirtualFile getSchemaFile() {
-      return JsonSchemaProviderFactory.getResourceFile(JsonSchemaSelfProviderFactory.class, "jsonSchema/schema.json");
+      return JsonSchemaProviderFactory.getResourceFile(JsonSchemaProjectSelfProviderFactory.class, "jsonSchema/schema.json");
     }
 
     @Override
     public SchemaType getSchemaType() {
       return SchemaType.schema;
     }
-
-    @Override
-    public boolean equals(Object o) {
-      if (this == o) return true;
-      if (o == null || getClass() != o.getClass()) return false;
-
-      MyJsonSchemaFileProvider provider = (MyJsonSchemaFileProvider)o;
-
-      if (myProject != null ? !myProject.equals(provider.myProject) : provider.myProject != null) return false;
-
-      return true;
-    }
-
-    @Override
-    public int hashCode() {
-      return myProject != null ? myProject.hashCode() : 0;
-    }
   }
 }
diff --git a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaSelfProviderFactory.java b/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaSelfProviderFactory.java
deleted file mode 100644
index bf5c19cac9cc..000000000000
--- a/json/src/com/jetbrains/jsonSchema/extension/JsonSchemaSelfProviderFactory.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2000-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.jetbrains.jsonSchema.extension;
-
-import com.intellij.openapi.project.Project;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.List;
-
-/**
- * @author Irina.Chernushina on 2/16/2016.
- */
-public class JsonSchemaSelfProviderFactory implements JsonSchemaProviderFactory {
-  @Override
-  public List<JsonSchemaFileProvider> getProviders(@Nullable Project project) {
-    return JsonSchemaProjectSelfProviderFactory.getInstance(project).getProviders();
-  }
-}
diff --git a/json/src/com/jetbrains/jsonSchema/extension/schema/JsonSchemaRefReferenceProvider.java b/json/src/com/jetbrains/jsonSchema/extension/schema/JsonSchemaRefReferenceProvider.java
index d0b10c898dc3..5d8170758bc3 100644
--- a/json/src/com/jetbrains/jsonSchema/extension/schema/JsonSchemaRefReferenceProvider.java
+++ b/json/src/com/jetbrains/jsonSchema/extension/schema/JsonSchemaRefReferenceProvider.java
@@ -16,6 +16,7 @@
 package com.jetbrains.jsonSchema.extension.schema;
 
 import com.intellij.json.psi.JsonValue;
+import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Pair;
 import com.intellij.openapi.util.Ref;
 import com.intellij.openapi.util.text.StringUtil;
@@ -25,6 +26,7 @@ import com.intellij.psi.search.GlobalSearchScope;
 import com.intellij.util.ProcessingContext;
 import com.intellij.util.indexing.FileBasedIndex;
 import com.jetbrains.jsonSchema.ide.JsonSchemaService;
+import com.jetbrains.jsonSchema.impl.JsonSchemaResourcesRootsProvider;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -63,15 +65,16 @@ public class JsonSchemaRefReferenceProvider extends PsiReferenceProvider {
         ref = text.substring(idx + 1);
       }
 
+      final Project project = getElement().getProject();
       final Ref<Pair<VirtualFile, Integer>> reference = new Ref<>();
       final GlobalSearchScope filter = id == null ? GlobalSearchScope.fileScope(getElement().getContainingFile()) :
-        GlobalSearchScope.allScope(getElement().getProject());
+                                       JsonSchemaResourcesRootsProvider.enlarge(project, GlobalSearchScope.allScope(project));
       String finalId = id;
       index.processValues(JsonSchemaFileIndex.PROPERTIES_INDEX, ref, null, new FileBasedIndex.ValueProcessor<Integer>() {
         @Override
         public boolean process(VirtualFile file, Integer value) {
           if (finalId != null) {
-            if (!JsonSchemaService.Impl.getEx(getElement().getProject()).checkFileForId(finalId, file)) {
+            if (!JsonSchemaService.Impl.getEx(project).checkFileForId(finalId, file)) {
               return true;
             }
           }
diff --git a/json/src/com/jetbrains/jsonSchema/ide/JsonSchemaService.java b/json/src/com/jetbrains/jsonSchema/ide/JsonSchemaService.java
index 66df74ad20f5..d9aa9f86d494 100644
--- a/json/src/com/jetbrains/jsonSchema/ide/JsonSchemaService.java
+++ b/json/src/com/jetbrains/jsonSchema/ide/JsonSchemaService.java
@@ -34,6 +34,8 @@ public interface JsonSchemaService {
 
   boolean isSchemaFile(@NotNull VirtualFile file, @NotNull Consumer<String> errorConsumer);
 
+  boolean isRegisteredSchemaFile(Project project, @NotNull VirtualFile file);
+
   @Nullable
   DocumentationProvider getDocumentationProvider(@Nullable VirtualFile file);
 
diff --git a/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaResourcesRootsProvider.java b/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaResourcesRootsProvider.java
new file mode 100644
index 000000000000..df3fc11d9d14
--- /dev/null
+++ b/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaResourcesRootsProvider.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.jetbrains.jsonSchema.impl;
+
+import com.intellij.openapi.extensions.Extensions;
+import com.intellij.openapi.module.Module;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.AtomicNotNullLazyValue;
+import com.intellij.openapi.util.NotNullLazyValue;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.search.GlobalSearchScope;
+import com.intellij.util.indexing.IndexableSetContributor;
+import com.jetbrains.jsonSchema.extension.JsonSchemaFileProvider;
+import com.jetbrains.jsonSchema.extension.JsonSchemaProviderFactory;
+import com.jetbrains.jsonSchema.extension.SchemaType;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * @author Irina.Chernushina on 4/14/2016.
+ */
+public class JsonSchemaResourcesRootsProvider extends IndexableSetContributor {
+  private static final NotNullLazyValue<Set<VirtualFile>> ourFiles = new AtomicNotNullLazyValue<Set<VirtualFile>>() {
+    @NotNull
+    @Override
+    protected Set<VirtualFile> compute() {
+      final Set<VirtualFile> set = new HashSet<>();
+      final JsonSchemaProviderFactory[] extensions = Extensions.getExtensions(JsonSchemaProviderFactory.EP_NAME);
+      for (JsonSchemaProviderFactory extension : extensions) {
+        final List<JsonSchemaFileProvider> providers = extension.getProviders(null);
+        for (JsonSchemaFileProvider provider : providers) {
+          if (!SchemaType.userSchema.equals(provider.getSchemaType())) {
+            set.add(provider.getSchemaFile());
+          }
+        }
+      }
+      return set;
+    }
+  };
+
+  @NotNull
+  @Override
+  public Set<VirtualFile> getAdditionalRootsToIndex() {
+    return ourFiles.getValue();
+  }
+
+  @NotNull
+  public static GlobalSearchScope enlarge(@NotNull final Project project, @NotNull final GlobalSearchScope scope) {
+    // we need to create the scope manually since files are outside project root (embedded)
+    return scope.union(new GlobalSearchScope() {
+      @Override
+      public boolean contains(@NotNull final VirtualFile file) {
+        return ourFiles.getValue().contains(file);
+      }
+
+      @Override
+      public int compare(@NotNull final VirtualFile file1, @NotNull final VirtualFile file2) {
+        return scope.compare(file1, file2);
+      }
+
+      @Override
+      public boolean isSearchInModuleContent(@NotNull final Module aModule) {
+        return scope.isSearchInModuleContent(aModule);
+      }
+
+      @Override
+      public boolean isSearchInLibraries() {
+        return scope.isSearchInLibraries();
+      }
+
+      @Override
+      public boolean isSearchOutsideRootModel() {
+        return true;
+      }
+    });
+  }
+}
diff --git a/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaServiceImpl.java b/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaServiceImpl.java
index 2d5fb9ad7ee6..3eae82cff603 100644
--- a/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaServiceImpl.java
+++ b/json/src/com/jetbrains/jsonSchema/impl/JsonSchemaServiceImpl.java
@@ -43,6 +43,7 @@ public class JsonSchemaServiceImpl implements JsonSchemaServiceEx {
   private final Project myProject;
   private final Object myLock;
   private final Map<VirtualFile, JsonSchemaObjectCodeInsightWrapper> myWrappers = new HashMap<>();
+  private final Set<VirtualFile> mySchemaFiles = new HashSet<>();
   private final JsonSchemaExportedDefinitions myDefinitions;
 
   public JsonSchemaServiceImpl(@Nullable Project project) {
@@ -84,6 +85,27 @@ public class JsonSchemaServiceImpl implements JsonSchemaServiceEx {
     return wrapper != null;
   }
 
+  @Override
+  public boolean isRegisteredSchemaFile(@NotNull Project project, @NotNull VirtualFile file) {
+    synchronized (myLock) {
+      ensureSchemaFiles(project);
+      return mySchemaFiles.contains(file);
+    }
+  }
+
+  private void ensureSchemaFiles(@NotNull final Project project) {
+    synchronized (myLock) {
+      if (!mySchemaFiles.isEmpty()) return;
+      final JsonSchemaProviderFactory[] factories = getProviderFactories();
+      for (JsonSchemaProviderFactory factory : factories) {
+        final List<JsonSchemaFileProvider> providers = factory.getProviders(project);
+        for (JsonSchemaFileProvider provider : providers) {
+          mySchemaFiles.add(provider.getSchemaFile());
+        }
+      }
+    }
+  }
+
   @Override
   public boolean isSchemaFile(@NotNull VirtualFile file, @NotNull final Consumer<String> errorConsumer) {
     final String text;
@@ -179,6 +201,7 @@ public class JsonSchemaServiceImpl implements JsonSchemaServiceEx {
     synchronized (myLock) {
       myWrappers.clear();
       myDefinitions.reset();
+      mySchemaFiles.clear();
     }
   }
 
@@ -225,14 +248,16 @@ public class JsonSchemaServiceImpl implements JsonSchemaServiceEx {
 
   @Nullable
   private List<JsonSchemaObjectCodeInsightWrapper> getWrappers(@Nullable VirtualFile file) {
-    if (file == null) return null;
+    if (file == null || myProject == null) return null;
     final List<JsonSchemaObjectCodeInsightWrapper> wrappers = new ArrayList<>();
     JsonSchemaProviderFactory[] factories = getProviderFactories();
-    for (JsonSchemaProviderFactory factory : factories) {
-      for (JsonSchemaFileProvider provider : factory.getProviders(myProject)) {
-        if (provider.isAvailable(file)) {
+    synchronized (myLock) {
+      final Set<VirtualFile> files = mySchemaFiles.isEmpty() ? new HashSet<>() : null;
+      for (JsonSchemaProviderFactory factory : factories) {
+        for (JsonSchemaFileProvider provider : factory.getProviders(myProject)) {
           final VirtualFile key = provider.getSchemaFile();
-          synchronized (myLock) {
+          if (files != null) files.add(key);
+          if (provider.isAvailable(myProject, file)) {
             JsonSchemaObjectCodeInsightWrapper wrapper = myWrappers.get(key);
             if (wrapper == null) {
               wrapper = createWrapper(provider);
@@ -243,6 +268,7 @@ public class JsonSchemaServiceImpl implements JsonSchemaServiceEx {
           }
         }
       }
+      if (files != null) mySchemaFiles.addAll(files);
     }
     return wrappers;
   }
diff --git a/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaCrossReferencesTest.java b/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaCrossReferencesTest.java
index 4eaa2d92e9db..a9c5490d507c 100644
--- a/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaCrossReferencesTest.java
+++ b/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaCrossReferencesTest.java
@@ -247,4 +247,58 @@ public class JsonSchemaCrossReferencesTest extends CompletionTestCase {
     instance.removeSchema(inherited);
     instance.removeSchema(base);
   }
+
+  public void testJsonSchemaGlobalRefsCrossResolve() throws Exception {
+    configureByFiles(null, BASE_SCHEMA_RESOLVE_PATH + "/referencingGlobalSchema.json");
+
+    String moduleDir = null;
+    VirtualFile moduleFile = null;
+    VirtualFile[] children = getProject().getBaseDir().getChildren();
+    for (VirtualFile child : children) {
+      if (child.isDirectory()) {
+        moduleDir = child.getName();
+        moduleFile = child;
+        break;
+      }
+    }
+    Assert.assertNotNull(moduleDir);
+
+    AreaPicoContainer container = Extensions.getArea(getProject()).getPicoContainer();
+    final String key = JsonSchemaMappingsProjectConfiguration.class.getName();
+    container.unregisterComponent(key);
+    container.registerComponentImplementation(key, TestJsonSchemaMappingsProjectConfiguration.class);
+
+    final JsonSchemaMappingsProjectConfiguration instance = JsonSchemaMappingsProjectConfiguration.getInstance(getProject());
+    final JsonSchemaMappingsConfigurationBase.SchemaInfo inherited
+      = new JsonSchemaMappingsConfigurationBase.SchemaInfo("inherited", "/" + moduleDir + "/referencingGlobalSchema.json", false, Collections.emptyList());
+
+    instance.addSchema(inherited);
+
+    try {
+      ApplicationManager.getApplication().runWriteAction(new Runnable() {
+        @Override
+        public void run() {
+          myFileTypeManager.associatePattern(JsonSchemaFileType.INSTANCE, "*Schema.json");
+        }
+      });
+      int offset = myEditor.getCaretModel().getPrimaryCaret().getOffset();
+      final PsiReference referenceAt = myFile.findReferenceAt(offset);
+      Assert.assertNotNull(referenceAt);
+      final PsiElement resolve = referenceAt.resolve();
+      Assert.assertNotNull(resolve);
+      Assert.assertEquals("\"enum\"", resolve.getText());
+
+      ApplicationManager.getApplication().runWriteAction(new Runnable() {
+        @Override
+        public void run() {
+          myFileTypeManager.removeAssociatedExtension(JsonSchemaFileType.INSTANCE, "*Schema.json");
+        }
+      });
+    } finally {
+      container.unregisterComponent(key);
+      container.registerComponentImplementation(key, JsonSchemaMappingsProjectConfiguration.class);
+    }
+
+    instance.removeSchema(inherited);
+  }
 }
diff --git a/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaTestProvider.java b/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaTestProvider.java
index 0d6a2678a8de..9c9b27ad3ddf 100644
--- a/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaTestProvider.java
+++ b/json/tests/test/com/jetbrains/jsonSchema/JsonSchemaTestProvider.java
@@ -3,6 +3,7 @@ package com.jetbrains.jsonSchema;
 
 import com.intellij.json.JsonLanguage;
 import com.intellij.openapi.fileTypes.LanguageFileType;
+import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.jetbrains.jsonSchema.extension.JsonSchemaFileProvider;
 import com.jetbrains.jsonSchema.extension.SchemaType;
@@ -16,7 +17,7 @@ public class JsonSchemaTestProvider implements JsonSchemaFileProvider {
   }
 
   @Override
-  public boolean isAvailable(@NotNull VirtualFile file) {
+  public boolean isAvailable(@NotNull Project project, @NotNull VirtualFile file) {
     return file.getFileType() instanceof LanguageFileType && ((LanguageFileType)file.getFileType()).getLanguage().isKindOf(JsonLanguage.INSTANCE);
   }
 
diff --git a/json/tests/testData/jsonSchema/schemaFile/resolve/referencingGlobalSchema.json b/json/tests/testData/jsonSchema/schemaFile/resolve/referencingGlobalSchema.json
new file mode 100644
index 000000000000..612d7e8a0109
--- /dev/null
+++ b/json/tests/testData/jsonSchema/schemaFile/resolve/referencingGlobalSchema.json
@@ -0,0 +1,7 @@
+{
+  "properties": {
+    "smth": {
+      "$ref" : "http://json-schema.org/draft-04/schema#/properties/enum<caret>"
+    }
+  }
+}
\ No newline at end of file
diff --git a/platform/indexing-api/src/com/intellij/util/indexing/IndexableSetContributor.java b/platform/indexing-api/src/com/intellij/util/indexing/IndexableSetContributor.java
index ec93cbe14b2e..97ec2863064a 100644
--- a/platform/indexing-api/src/com/intellij/util/indexing/IndexableSetContributor.java
+++ b/platform/indexing-api/src/com/intellij/util/indexing/IndexableSetContributor.java
@@ -60,7 +60,7 @@ public abstract class IndexableSetContributor {
    *         the returned set should not contain nulls or invalid files
    */
   @NotNull
-  public abstract Set<VirtualFile> getAdditionalRootsToIndex();
+  public abstract Set getAdditionalRootsToIndex();
 
   @NotNull
   private static Set<VirtualFile> filterOutNulls(@NotNull IndexableSetContributor contributor,
diff --git a/platform/platform-resources/src/META-INF/JsonPlugin.xml b/platform/platform-resources/src/META-INF/JsonPlugin.xml
index 9f50e0b13dbb..518f8fbc79ae 100644
--- a/platform/platform-resources/src/META-INF/JsonPlugin.xml
+++ b/platform/platform-resources/src/META-INF/JsonPlugin.xml
@@ -77,10 +77,11 @@
 
     <fileBasedIndex implementation="com.jetbrains.jsonSchema.extension.schema.JsonSchemaFileIndex"/>
     <psi.referenceContributor language="JSON" implementation="com.jetbrains.jsonSchema.extension.schema.JsonSchemaReferenceContributor"/>
+    <indexedRootsProvider implementation="com.jetbrains.jsonSchema.impl.JsonSchemaResourcesRootsProvider"/>
   </extensions>
   <extensions defaultExtensionNs="JavaScript">
     <JsonSchema.ProviderFactory implementation="com.jetbrains.jsonSchema.extension.JsonSchemaImportedProviderFactory"/>
-    <JsonSchema.ProviderFactory implementation="com.jetbrains.jsonSchema.extension.JsonSchemaSelfProviderFactory"/>
+    <JsonSchema.ProviderFactory implementation="com.jetbrains.jsonSchema.extension.JsonSchemaProjectSelfProviderFactory"/>
   </extensions>
 
   <extensionPoints>