diff --git a/java/java-psi-api/src/com/intellij/codeInsight/BaseExternalAnnotationsManager.java b/java/java-psi-api/src/com/intellij/codeInsight/BaseExternalAnnotationsManager.java
index 752184907454..04ec404c480b 100644
--- a/java/java-psi-api/src/com/intellij/codeInsight/BaseExternalAnnotationsManager.java
+++ b/java/java-psi-api/src/com/intellij/codeInsight/BaseExternalAnnotationsManager.java
@@ -101,6 +101,13 @@ public abstract class BaseExternalAnnotationsManager extends ExternalAnnotations
     return collectExternalAnnotations(listOwner).get(annotationFQN);
   }
 
+  @Override
+  public boolean isExternalAnnotationWritable(@NotNull PsiModifierListOwner listOwner, @NotNull String annotationFQN) {
+    // note that this method doesn't cache it's result
+    Map<String, PsiAnnotation> map = doCollect(listOwner, true);
+    return map.containsKey(annotationFQN);
+  }
+
   @Override
   @Nullable
   public PsiAnnotation[] findExternalAnnotations(@NotNull final PsiModifierListOwner listOwner) {
@@ -115,7 +122,7 @@ public abstract class BaseExternalAnnotationsManager extends ExternalAnnotations
 
     Map<String, PsiAnnotation> map = cache.get(listOwner);
     if (map == null) {
-      map = doCollect(listOwner);
+      map = doCollect(listOwner, false);
       cache.put(listOwner, map);
     }
     return map;
@@ -176,7 +183,7 @@ public abstract class BaseExternalAnnotationsManager extends ExternalAnnotations
     }
   }
 
-  private Map<String, PsiAnnotation> doCollect(@NotNull PsiModifierListOwner listOwner) {
+  private Map<String, PsiAnnotation> doCollect(@NotNull PsiModifierListOwner listOwner, boolean onlyWritable) {
     final List<PsiFile> files = findExternalAnnotationsFiles(listOwner);
     if (files == null) {
       return Collections.emptyMap();
@@ -187,6 +194,8 @@ public abstract class BaseExternalAnnotationsManager extends ExternalAnnotations
 
     for (PsiFile file : files) {
       if (!file.isValid()) continue;
+      if (onlyWritable && !file.isWritable()) continue;
+
       MultiMap<String, AnnotationData> fileData = getDataFromFile(file);
       for (AnnotationData annotationData : ContainerUtil.concat(fileData.get(externalName), fileData.get(oldExternalName))) {
         // don't add annotation, if there already is one with this FQ name
diff --git a/java/java-psi-api/src/com/intellij/codeInsight/ExternalAnnotationsManager.java b/java/java-psi-api/src/com/intellij/codeInsight/ExternalAnnotationsManager.java
index 83ee339ce5b0..1a12129d6f95 100644
--- a/java/java-psi-api/src/com/intellij/codeInsight/ExternalAnnotationsManager.java
+++ b/java/java-psi-api/src/com/intellij/codeInsight/ExternalAnnotationsManager.java
@@ -48,6 +48,8 @@ public abstract class ExternalAnnotationsManager {
   @Nullable
   public abstract PsiAnnotation findExternalAnnotation(@NotNull PsiModifierListOwner listOwner, @NotNull String annotationFQN);
 
+  public abstract boolean isExternalAnnotationWritable(@NotNull PsiModifierListOwner listOwner, @NotNull String annotationFQN);
+
   @Nullable
   public abstract PsiAnnotation[] findExternalAnnotations(@NotNull PsiModifierListOwner listOwner);