diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index cc9acff..1446d19 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -416,7 +416,7 @@
         }
 
         if (mMasterMono.load()) {  // memory_order_seq_cst
-            mono_blend(mMixerBuffer, mMixerBufferFormat, Format_channelCount(mFormat), frameCount);
+            mono_blend(mMixerBuffer, mMixerBufferFormat, Format_channelCount(mFormat), frameCount, true /*limit*/);
         }
         // prepare the buffer used to write to sink
         void *buffer = mSinkBuffer != NULL ? mSinkBuffer : mMixerBuffer;