diff --git a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
index a19cfd353153..9f460b371bf1 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
@@ -19,6 +19,7 @@ import com.intellij.openapi.editor.ex.DocumentEx;
 import com.intellij.openapi.editor.ex.PrioritizedDocumentListener;
 import com.intellij.openapi.editor.impl.DocumentImpl;
 import com.intellij.openapi.editor.impl.EditorFactoryImpl;
+import com.intellij.openapi.editor.impl.FrozenDocument;
 import com.intellij.openapi.editor.impl.TrailingSpacesStripper;
 import com.intellij.openapi.fileEditor.*;
 import com.intellij.openapi.fileEditor.impl.text.TextEditorImpl;
@@ -242,6 +243,7 @@ public class FileDocumentManagerImpl extends FileDocumentManager implements Virt
   @Override
   @Nullable
   public VirtualFile getFile(@NotNull Document document) {
+    if (document instanceof FrozenDocument) return null;
     return document.getUserData(FILE_KEY);
   }