diff --git a/media/libstagefright/codecs/mp3dec/src/pvmp3_framedecoder.cpp b/media/libstagefright/codecs/mp3dec/src/pvmp3_framedecoder.cpp
index df6cd0393e..a5c7f5ee5c 100644
--- a/media/libstagefright/codecs/mp3dec/src/pvmp3_framedecoder.cpp
+++ b/media/libstagefright/codecs/mp3dec/src/pvmp3_framedecoder.cpp
@@ -659,20 +659,12 @@ void pvmp3_InitDecoder(tPVMP3DecoderExternal *pExt,
     huffcodetab       *pHuff;
 
     pVars = (tmp3dec_file *)pMem;
-
-    pVars->num_channels = 0;
+    memset(pVars, 0, sizeof(*pVars));
 
     pExt->totalNumberOfBitsUsed = 0;
     pExt->inputBufferCurrentLength = 0;
     pExt->inputBufferUsedLength    = 0;
 
-    pVars->mainDataStream.offset = 0;
-
-    pv_memset((void*)pVars->mainDataBuffer,
-              0,
-              BUFSIZE*sizeof(*pVars->mainDataBuffer));
-
-
     pVars->inputStream.pBuffer = pExt->pInputBuffer;
 
     /*