diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 3c3eadc..0713c66 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -1338,7 +1338,7 @@
     return status;
 }
 
-void AudioTrack::releaseBuffer(Buffer* audioBuffer)
+void AudioTrack::releaseBuffer(const Buffer* audioBuffer)
 {
     // FIXME add error checking on mode, by adding an internal version
     if (mTransfer == TRANSFER_SHARED) {