diff --git a/include/hwdep.h b/include/hwdep.h
index e09703c2..ac713680 100644
--- a/include/hwdep.h
+++ b/include/hwdep.h
@@ -77,8 +77,10 @@ typedef enum _snd_hwdep_iface {
 	SND_HWDEP_IFACE_FW_DIGI00X,	/* Digidesign Digi 002/003 family */
 	SND_HWDEP_IFACE_FW_TASCAM,	/* TASCAM FireWire series */
 	SND_HWDEP_IFACE_LINE6,		/* Line6 USB processors */
+	SND_HWDEP_IFACE_FW_MOTU,	/* MOTU FireWire series */
+	SND_HWDEP_IFACE_FW_FIREFACE,	/* RME Fireface series */
 
-	SND_HWDEP_IFACE_LAST = SND_HWDEP_IFACE_LINE6,	/**< last known hwdep interface */
+	SND_HWDEP_IFACE_LAST = SND_HWDEP_IFACE_FW_FIREFACE,	/**< last known hwdep interface */
 } snd_hwdep_iface_t;
 
 /** open for reading */
diff --git a/include/sound/asound.h b/include/sound/asound.h
index 36d1681e..fb8d7d7e 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -107,9 +107,11 @@ enum {
 	SNDRV_HWDEP_IFACE_FW_DIGI00X,	/* Digidesign Digi 002/003 family */
 	SNDRV_HWDEP_IFACE_FW_TASCAM,	/* TASCAM FireWire series */
 	SNDRV_HWDEP_IFACE_LINE6,	/* Line6 USB processors */
+	SNDRV_HWDEP_IFACE_FW_MOTU,	/* MOTU FireWire series */
+	SNDRV_HWDEP_IFACE_FW_FIREFACE,	/* RME Fireface series */
 
 	/* Don't forget to change the following: */
-	SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_LINE6,
+	SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE,
 };
 
 struct snd_hwdep_info {