diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 81804c2..a0b53cb 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -501,6 +501,7 @@
     SortedVector< wp<Track> >       mActiveTracks;  // FIXME check if this could be sp<>
     SortedVector<int>               mWakeLockUids;
     int                             mActiveTracksGeneration;
+    wp<Track>                       mLatestActiveTrack; // latest track added to mActiveTracks
 
     // Allocate a track name for a given channel mask.
     //   Returns name >= 0 if successful, -1 on failure.