Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision 53a7fdab2da836267125cdef52bcb9e567799544)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision c0149cc54ea29b8721df635059d2eb7364bf9936)
@@ -39,4 +39,6 @@
 	/** Audio device mixer interface */
 	AUDIO_MIXER_IFACE,
+	/** Audio device pcm buffer interface */
+	AUDIO_PCM_BUFFER_IFACE,
 
 	/** Character device interface */