diff --git a/xml/tests/src/com/intellij/codeInsight/completion/XmlCompletionTest.java b/xml/tests/src/com/intellij/codeInsight/completion/XmlCompletionTest.java
index 05eb6a341b17..e53821560604 100644
--- a/xml/tests/src/com/intellij/codeInsight/completion/XmlCompletionTest.java
+++ b/xml/tests/src/com/intellij/codeInsight/completion/XmlCompletionTest.java
@@ -17,6 +17,7 @@ import com.intellij.psi.statistics.StatisticsManager;
 import com.intellij.psi.statistics.impl.StatisticsManagerImpl;
 import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase;
 import com.intellij.xml.util.XmlUtil;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
@@ -67,7 +68,7 @@ public class XmlCompletionTest extends LightCodeInsightFixtureTestCase {
   protected void runTest() throws Throwable {
     new WriteCommandAction(getProject()) {
       @Override
-      protected void run(Result result) throws Throwable {
+      protected void run(@NotNull Result result) throws Throwable {
         XmlCompletionTest.super.runTest();
       }
     }.execute();
@@ -686,5 +687,15 @@ public class XmlCompletionTest extends LightCodeInsightFixtureTestCase {
     myFixture.testCompletionVariants("tagValue/completeEnum.xml", "none", "standard");
     myFixture.testCompletionVariants("tagValue/completeBoolean.xml", "false", "true");
   }
+
+  public void testInheritedAttribute() throws Exception {
+    myFixture.configureByFiles("InheritedAttr/test.xsd", "InheritedAttr/library.xsd");
+    myFixture.testCompletionVariants("InheritedAttr/test.xml", "buz",
+    "library:boo",
+    "xml:base",
+    "xml:id",
+    "xml:lang",
+    "xml:space");
+  }
 }
 
diff --git a/xml/tests/testData/completion/InheritedAttr/library.xsd b/xml/tests/testData/completion/InheritedAttr/library.xsd
new file mode 100644
index 000000000000..6381dd0b729f
--- /dev/null
+++ b/xml/tests/testData/completion/InheritedAttr/library.xsd
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema attributeFormDefault="unqualified"
+           elementFormDefault="qualified"
+           targetNamespace="http://library"
+           xmlns:library="http://library"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="bar" type='library:barType'/>
+  <xs:complexType name="barType">
+    <xs:attribute type='xs:string' name="buz"/>
+    <xs:anyAttribute namespace="##any"/>
+  </xs:complexType>
+    <xs:attribute type='xs:string' name="boo"/>
+</xs:schema>
\ No newline at end of file
diff --git a/xml/tests/testData/completion/InheritedAttr/test.xml b/xml/tests/testData/completion/InheritedAttr/test.xml
new file mode 100644
index 000000000000..dfa5afac32b5
--- /dev/null
+++ b/xml/tests/testData/completion/InheritedAttr/test.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<test:foo xmlns:test="http://test"
+          xmlns:library="http://library"
+          <caret>/>
\ No newline at end of file
diff --git a/xml/tests/testData/completion/InheritedAttr/test.xsd b/xml/tests/testData/completion/InheritedAttr/test.xsd
new file mode 100644
index 000000000000..bb9e9824cf51
--- /dev/null
+++ b/xml/tests/testData/completion/InheritedAttr/test.xsd
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema attributeFormDefault="unqualified"
+           elementFormDefault="qualified"
+           targetNamespace="http://test"
+           xmlns:local="http://test"
+           xmlns:library="http://library"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:import namespace="http://library"/>
+  <xs:element name="foo" type='local:fooType'/>
+  <xs:complexType name="fooType">
+    <xs:complexContent>
+      <xs:extension base='library:barType'/>
+    </xs:complexContent>
+  </xs:complexType>
+</xs:schema>
\ No newline at end of file
diff --git a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/ComplexTypeDescriptor.java b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/ComplexTypeDescriptor.java
index f4d468edf759..31fd2d385364 100644
--- a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/ComplexTypeDescriptor.java
+++ b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/ComplexTypeDescriptor.java
@@ -233,6 +233,9 @@ public class ComplexTypeDescriptor extends TypeDescriptor {
           else {
             XmlAttributeDescriptorImpl descriptor = myDocumentDescriptor.createAttributeDescriptor(tag);
             descriptor.myUse = use;
+            if (ref != null) {
+              descriptor.myReferenceName = ref.getAttributeValue(REF_ATTR_NAME);
+            }
             addAttributeDescriptor(result, descriptor);
           }
         }
diff --git a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlAttributeDescriptorImpl.java b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlAttributeDescriptorImpl.java
index ce3d6485705c..4447ed2bd5eb 100644
--- a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlAttributeDescriptorImpl.java
+++ b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlAttributeDescriptorImpl.java
@@ -33,6 +33,7 @@ import org.jetbrains.annotations.Nullable;
 public class XmlAttributeDescriptorImpl extends XsdEnumerationDescriptor implements PsiWritableMetaData, XmlAttributeDescriptor {
   private XmlTag myTag;
   String myUse;
+  String myReferenceName;
 
   @NonNls
   public static final String REQUIRED_ATTR_VALUE = "required";
@@ -114,8 +115,6 @@ public class XmlAttributeDescriptorImpl extends XsdEnumerationDescriptor impleme
     if (context == null) {
       return name;
     }
-    final String form = myTag.getAttributeValue("form");
-    boolean isQualifiedAttr = QUALIFIED_ATTR_VALUE.equals(form);
 
     final XmlTag rootTag = (((XmlFile) myTag.getContainingFile())).getRootTag();
     assert rootTag != null;
@@ -123,6 +122,19 @@ public class XmlAttributeDescriptorImpl extends XsdEnumerationDescriptor impleme
     if (targetNs == null) return name;
 
     XmlTag contextTag = (XmlTag)context;
+    if (QUALIFIED_ATTR_VALUE.equals(myTag.getAttributeValue("form")) ||
+        QUALIFIED_ATTR_VALUE.equals(rootTag.getAttributeValue("attributeFormDefault")) ||
+        shouldBeQualified(targetNs, contextTag)) {
+      final String prefixByNamespace = contextTag.getPrefixByNamespace(targetNs);
+      if (prefixByNamespace!= null && prefixByNamespace.length() > 0) {
+        name = prefixByNamespace + ":" + name;
+      }
+    }
+
+    return name;
+  }
+
+  private boolean shouldBeQualified(String targetNs, XmlTag contextTag) {
     boolean attributeShouldBeQualified = false;
 
     String contextNs = contextTag.getNamespace();
@@ -135,6 +147,10 @@ public class XmlAttributeDescriptorImpl extends XsdEnumerationDescriptor impleme
 
         if (type instanceof ComplexTypeDescriptor) {
           final ComplexTypeDescriptor typeDescriptor = (ComplexTypeDescriptor)type;
+          XmlAttributeDescriptor[] attributes = ((ComplexTypeDescriptor)type).getAttributes(contextTag);
+          if ((myReferenceName == null || myReferenceName.indexOf(':') == -1) && ArrayUtil.contains(this, attributes)) {
+            return false;
+          }
           attributeShouldBeQualified = typeDescriptor.canContainAttribute(targetNs, null) != ComplexTypeDescriptor.CanContainAttributeType.CanNotContain;
         }
 
@@ -143,17 +159,7 @@ public class XmlAttributeDescriptorImpl extends XsdEnumerationDescriptor impleme
         }
       }
     }
-
-    if (isQualifiedAttr ||
-        QUALIFIED_ATTR_VALUE.equals(rootTag.getAttributeValue("attributeFormDefault")) ||
-        attributeShouldBeQualified) {
-      final String prefixByNamespace = contextTag.getPrefixByNamespace(targetNs);
-      if (prefixByNamespace!= null && prefixByNamespace.length() > 0) {
-        name = prefixByNamespace + ":" + name;
-      }
-    }
-
-    return name;
+    return attributeShouldBeQualified;
   }
 
   public void setName(String name) throws IncorrectOperationException {
diff --git a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlElementDescriptorImpl.java b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlElementDescriptorImpl.java
index 974e2e7cfb97..3c75d9efcbf8 100644
--- a/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlElementDescriptorImpl.java
+++ b/xml/xml-psi-impl/src/com/intellij/xml/impl/schema/XmlElementDescriptorImpl.java
@@ -377,11 +377,6 @@ public class XmlElementDescriptorImpl extends XsdEnumerationDescriptor<XmlTag>
       final ComplexTypeDescriptor.CanContainAttributeType containAttributeType = descriptor.canContainAttribute(namespace, qName);
 
       if (containAttributeType != ComplexTypeDescriptor.CanContainAttributeType.CanNotContain) {
-        for (XmlAttributeDescriptor attributeDescriptor : descriptors) {
-          if (attributeDescriptor.getName().equals(attributeName)) {
-            return attributeDescriptor;
-          }
-        }
         return new AnyXmlAttributeDescriptor(attributeName, containAttributeType);
       }
     }