diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 0f01b02..a396aaf 100755
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3643,7 +3643,7 @@
             memset(mEffectBuffer, 0, mEffectBufferSize);
         }
         // FIXME as a performance optimization, should remember previous zero status
-        memset(mSinkBuffer, 0, mNormalFrameCount * mChannelCount * sizeof(int16_t));
+        memset(mSinkBuffer, 0, mNormalFrameCount * mFrameSize);
     }
 
     // if any fast tracks, then status is ready