diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 85e98f1..f624020 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -1883,6 +1883,7 @@
             : OMX_AUDIO_AACStreamFormatMP4FF;
 
     OMX_AUDIO_PARAM_ANDROID_AACPRESENTATIONTYPE presentation;
+    InitOMXParams(&presentation);
     presentation.nMaxOutputChannels = maxOutputChannelCount;
     presentation.nDrcCut = drc.drcCut;
     presentation.nDrcBoost = drc.drcBoost;