diff --git a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndex.java b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndex.java
index c2f3ad423b19..3ef57cafca3a 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndex.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndex.java
@@ -17,7 +17,9 @@ package com.intellij.util.indexing;
 
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ApplicationComponent;
+import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.project.Project;
+import com.intellij.openapi.roots.ContentIterator;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.VirtualFileWithId;
@@ -35,6 +37,8 @@ import java.util.Set;
  * Author: dmitrylomov
  */
 public abstract class FileBasedIndex implements ApplicationComponent {
+  public abstract void iterateIndexableFiles(@NotNull ContentIterator processor, @NotNull Project project, ProgressIndicator indicator);
+
   public static FileBasedIndex getInstance() {
     return ApplicationManager.getApplication().getComponent(FileBasedIndex.class);
   }
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 1cf3b2677d89..29e82dd6d2a6 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -2189,7 +2189,8 @@ public class FileBasedIndexImpl extends FileBasedIndex {
     }
   }
 
-  public static void iterateIndexableFiles(@NotNull final ContentIterator processor, @NotNull Project project, ProgressIndicator indicator) {
+  @Override
+  public void iterateIndexableFiles(@NotNull final ContentIterator processor, @NotNull Project project, ProgressIndicator indicator) {
     if (project.isDisposed()) {
       return;
     }
diff --git a/platform/lang-impl/src/com/intellij/util/indexing/UnindexedFilesUpdater.java b/platform/lang-impl/src/com/intellij/util/indexing/UnindexedFilesUpdater.java
index efb1445da0be..a0e42f63198d 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/UnindexedFilesUpdater.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/UnindexedFilesUpdater.java
@@ -51,7 +51,7 @@ public class UnindexedFilesUpdater implements CacheUpdater {
   public VirtualFile[] queryNeededFiles(ProgressIndicator indicator) {
     CollectingContentIterator finder = myIndex.createContentIterator();
     long l = System.currentTimeMillis();
-    FileBasedIndexImpl.iterateIndexableFiles(finder, myProject, indicator);
+    FileBasedIndex.getInstance().iterateIndexableFiles(finder, myProject, indicator);
     LOG.info("Indexable files iterated in " + (System.currentTimeMillis() - l) + " ms");
     List<VirtualFile> files = finder.getFiles();
     LOG.info("Unindexed files update started: " + files.size() + " files to update");