diff --git a/platform/lang-impl/src/com/intellij/psi/impl/include/FileIncludeIndex.java b/platform/lang-impl/src/com/intellij/psi/impl/include/FileIncludeIndex.java
index 83df02918a15..3db77867cfa8 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/include/FileIncludeIndex.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/include/FileIncludeIndex.java
@@ -192,7 +192,7 @@ public class FileIncludeIndex extends FileBasedIndexExtension<FileIncludeIndex.K
 
   @Override
   public int getVersion() {
-    return 1;
+    return 2;
   }
 
   interface Key {