1 files changed, 2 insertions, 1 deletions
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 85077380ea6e..da85132806e5 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -531,7 +531,8 @@ public class FileBasedIndexImpl extends FileBasedIndex {
         extension.hasSnapshotMapping() && IdIndex.ourSnapshotMappingsEnabled
         ? createInputsIndexExternalizer(extension, indexId, extension.getKeyDescriptor())
         : null;
-      index = new MapReduceIndex<K, V, FileContent>(indexId, extension.getIndexer(), storage, externalizer, extension.getValueExternalizer());
+      index = new MapReduceIndex<K, V, FileContent>(
+        indexId, extension.getIndexer(), storage, externalizer, extension.getValueExternalizer(), extension instanceof PsiDependentIndex);
     }
     index.setInputIdToDataKeysIndex(new Factory<PersistentHashMap<Integer, Collection<K>>>() {
       @Override