diff --git a/java/compiler/impl/src/com/intellij/compiler/CompilerReferenceReader.java b/java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceReader.java
similarity index 97%
rename from java/compiler/impl/src/com/intellij/compiler/CompilerReferenceReader.java
rename to java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceReader.java
index 47edd0c7b13f..995ae637a853 100644
--- a/java/compiler/impl/src/com/intellij/compiler/CompilerReferenceReader.java
+++ b/java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceReader.java
@@ -13,9 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.intellij.compiler;
+package com.intellij.compiler.backwardRefs;
 
-import com.intellij.compiler.backwardRefs.LanguageLightUsageConverter;
+import com.intellij.compiler.ClassResolvingCompilerSearchAdapter;
+import com.intellij.compiler.CompilerElement;
+import com.intellij.compiler.CompilerSearchAdapter;
 import com.intellij.compiler.server.BuildManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.fileTypes.FileType;
@@ -28,7 +30,6 @@ import com.intellij.psi.PsiNamedElement;
 import com.intellij.psi.search.GlobalSearchScope;
 import com.intellij.util.ObjectUtils;
 import com.intellij.util.SmartList;
-import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.containers.Queue;
 import com.sun.tools.javac.util.Convert;
 import gnu.trove.THashMap;
@@ -42,7 +43,6 @@ import org.jetbrains.jps.backwardRefs.LightUsage;
 import java.io.File;
 import java.io.IOException;
 import java.util.*;
-import java.util.stream.Stream;
 
 import static java.util.stream.Collectors.*;
 
diff --git a/java/compiler/impl/src/com/intellij/compiler/CompilerReferenceServiceImpl.java b/java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceServiceImpl.java
similarity index 98%
rename from java/compiler/impl/src/com/intellij/compiler/CompilerReferenceServiceImpl.java
rename to java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceServiceImpl.java
index ee8f364c07ae..9900e1fd8125 100644
--- a/java/compiler/impl/src/com/intellij/compiler/CompilerReferenceServiceImpl.java
+++ b/java/compiler/impl/src/com/intellij/compiler/backwardRefs/CompilerReferenceServiceImpl.java
@@ -13,9 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.intellij.compiler;
+package com.intellij.compiler.backwardRefs;
 
-import com.intellij.compiler.backwardRefs.LanguageLightUsageConverter;
+import com.intellij.compiler.ClassResolvingCompilerSearchAdapter;
+import com.intellij.compiler.CompilerElement;
+import com.intellij.compiler.CompilerReferenceService;
+import com.intellij.compiler.CompilerSearchAdapter;
 import com.intellij.compiler.server.BuildManager;
 import com.intellij.compiler.server.BuildManagerListener;
 import com.intellij.lang.injection.InjectedLanguageManager;
@@ -243,7 +246,7 @@ public class CompilerReferenceServiceImpl extends CompilerReferenceService imple
   }
 
   private boolean isServiceEnabledFor(PsiElement element) {
-    return isServiceEnabled() && InjectedLanguageManager.getInstance(myProject).isInjectedFragment(ReadAction.compute(() -> element.getContainingFile()));
+    return isServiceEnabled() && !InjectedLanguageManager.getInstance(myProject).isInjectedFragment(ReadAction.compute(() -> element.getContainingFile()));
   }
 
   private boolean isServiceEnabled() {
diff --git a/java/java-tests/testSrc/com/intellij/compiler/CompilerReferencesTest.java b/java/java-tests/testSrc/com/intellij/compiler/CompilerReferencesTest.java
index 7cfe4c2bb450..e7d5c8a95c1e 100644
--- a/java/java-tests/testSrc/com/intellij/compiler/CompilerReferencesTest.java
+++ b/java/java-tests/testSrc/com/intellij/compiler/CompilerReferencesTest.java
@@ -17,6 +17,7 @@ package com.intellij.compiler;
 
 import com.intellij.JavaTestUtil;
 import com.intellij.codeInsight.completion.AbstractCompilerAwareTest;
+import com.intellij.compiler.backwardRefs.CompilerReferenceServiceImpl;
 import com.intellij.openapi.fileTypes.StdFileTypes;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.pom.java.LanguageLevel;
diff --git a/resources/src/META-INF/IdeaPlugin.xml b/resources/src/META-INF/IdeaPlugin.xml
index 405fb123613e..d0b992ca5e6d 100644
--- a/resources/src/META-INF/IdeaPlugin.xml
+++ b/resources/src/META-INF/IdeaPlugin.xml
@@ -77,7 +77,7 @@
 
     <component>
       <interface-class>com.intellij.compiler.CompilerReferenceService</interface-class>
-      <implementation-class>com.intellij.compiler.CompilerReferenceServiceImpl</implementation-class>
+      <implementation-class>com.intellij.compiler.backwardRefs.CompilerReferenceServiceImpl</implementation-class>
     </component>
   </project-components>