diff --git a/media/libnbaio/NBAIO.cpp b/media/libnbaio/NBAIO.cpp
index 16e7df5..4f6591d 100644
--- a/media/libnbaio/NBAIO.cpp
+++ b/media/libnbaio/NBAIO.cpp
@@ -27,6 +27,7 @@
     return format.mFrameSize;
 }
 
+#if 0
 int Format_frameBitShift(const NBAIO_Format& format)
 {
     // FIXME The sample format is hard-coded to AUDIO_FORMAT_PCM_16_BIT
@@ -34,6 +35,7 @@
     return Format_channelCount(format);
     // FIXME must return -1 for non-power of 2
 }
+#endif
 
 const NBAIO_Format Format_Invalid = { 0, 0, AUDIO_FORMAT_INVALID, 0 };