diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index e4fd3fc..0094a9f 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -516,8 +516,8 @@
                                                  audio_session_t sessionId,
                                                  bool threadLocked);
 
-                virtual status_t    setSyncEvent(const sp<SyncEvent>& event) = 0;
-                virtual bool        isValidSyncEvent(const sp<SyncEvent>& event) const = 0;
+                virtual status_t setSyncEvent(const sp<audioflinger::SyncEvent>& event) = 0;
+                virtual bool isValidSyncEvent(const sp<audioflinger::SyncEvent>& event) const = 0;
 
                 // Return a reference to a per-thread heap which can be used to allocate IMemory
                 // objects that will be read-only to client processes, read/write to mediaserver,
@@ -1019,8 +1019,8 @@
                 virtual product_strategy_t getStrategyForSession_l(audio_session_t sessionId);
 
 
-                virtual status_t setSyncEvent(const sp<SyncEvent>& event);
-                virtual bool     isValidSyncEvent(const sp<SyncEvent>& event) const;
+                status_t setSyncEvent(const sp<audioflinger::SyncEvent>& event) override;
+                bool     isValidSyncEvent(const sp<audioflinger::SyncEvent>& event) const override;
 
                 // called with AudioFlinger lock held
                         bool     invalidateTracks_l(audio_stream_type_t streamType);
@@ -1921,10 +1921,10 @@
             // FIXME replace by Set [and implement Bag/Multiset for other uses].
             KeyedVector<audio_session_t, bool> sessionIds() const;
 
-    virtual status_t setSyncEvent(const sp<SyncEvent>& event);
-    virtual bool     isValidSyncEvent(const sp<SyncEvent>& event) const;
+            status_t setSyncEvent(const sp<audioflinger::SyncEvent>& event) override;
+            bool     isValidSyncEvent(const sp<audioflinger::SyncEvent>& event) const override;
 
-    static void syncStartEventCallback(const wp<SyncEvent>& event);
+    static void syncStartEventCallback(const wp<audioflinger::SyncEvent>& event);
 
     virtual size_t      frameCount() const { return mFrameCount; }
             bool        hasFastCapture() const { return mFastCapture != 0; }
@@ -2127,8 +2127,8 @@
                                 // Note: using mActiveTracks as no mTracks here.
                                 return ThreadBase::hasAudioSession_l(sessionId, mActiveTracks);
                             }
-    virtual     status_t    setSyncEvent(const sp<SyncEvent>& event);
-    virtual     bool        isValidSyncEvent(const sp<SyncEvent>& event) const;
+    virtual     status_t    setSyncEvent(const sp<audioflinger::SyncEvent>& event);
+    virtual     bool        isValidSyncEvent(const sp<audioflinger::SyncEvent>& event) const;
 
     virtual     void        checkSilentMode_l() {}
     virtual     void        processVolume_l() {}