diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index fd51b8f..da6d4e3 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -680,7 +680,7 @@
 
     float                   mVolume[2];
     float                   mSendLevel;
-    mutable uint32_t        mSampleRate;            // mutable because getSampleRate() can update it.
+    mutable uint32_t        mSampleRate;            // mutable because getSampleRate() can update it
     size_t                  mFrameCount;            // corresponds to current IAudioTrack, value is
                                                     // reported back by AudioFlinger to the client
     size_t                  mReqFrameCount;         // frame count to request the first or next time