diff --git a/include/nuttx/audio/audio.h b/include/nuttx/audio/audio.h
index 1053d8b9ff..4c6167c87f 100644
--- a/include/nuttx/audio/audio.h
+++ b/include/nuttx/audio/audio.h
@@ -114,6 +114,7 @@
 #define AUDIOIOC_SETPARAMTER        _AUDIOIOC(18)
 #define AUDIOIOC_GETLATENCY         _AUDIOIOC(19)
 #define AUDIOIOC_FLUSH              _AUDIOIOC(20)
+#define AUDIOIOC_GETPOSITION        _AUDIOIOC(21)
 
 /* Audio Device Types *******************************************************/