Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision c09ad29e7331eb117f4fc7fa9014818508a6c1f8)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision b499127828aca49910e7068dbb466d6d91ef048e)
@@ -39,4 +39,6 @@
 	/** Audio device mixer interface */
 	AUDIO_MIXER_IFACE,
+	/** Audio device pcm buffer interface */
+	AUDIO_PCM_BUFFER_IFACE,
 
 	/** Character device interface */