diff --git a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
index d658dd11616b..b6043d4bef02 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -2145,6 +2145,7 @@ public class FileBasedIndexImpl extends FileBasedIndex {
     myIndexableSetToProjectMap.put(set, project);
   }
 
+  @Override
   public void removeIndexableSet(@NotNull IndexableFileSet set) {
     myChangedFilesCollector.forceUpdate(null, null, null, true);
     myIndexableSets.remove(set);