1 files changed, 6 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/ComboAlbum.java b/src/com/android/gallery3d/data/ComboAlbum.java
index 8ca2077a4..69ab62e53 100644
--- a/src/com/android/gallery3d/data/ComboAlbum.java
+++ b/src/com/android/gallery3d/data/ComboAlbum.java
@@ -17,6 +17,7 @@
 package com.android.gallery3d.data;
 
 import com.android.gallery3d.app.GalleryApp;
+import com.android.gallery3d.util.Future;
 
 import java.util.ArrayList;
 
@@ -84,4 +85,9 @@ public class ComboAlbum extends MediaSet implements ContentListener {
     public void onContentDirty() {
         notifyContentChanged();
     }
+
+    @Override
+    public Future<Integer> requestSync(SyncListener listener) {
+        return requestSyncOnEmptySets(mSets, listener);
+    }
 }