diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 8621c9f2eafd..586d98f1b63d 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1492,6 +1492,7 @@ static const char *alc_slave_sws[] = {
 	"Headphone Playback Switch",
 	"Speaker Playback Switch",
 	"Mono Playback Switch",
+	"IEC958 Playback Switch",
 	NULL,
 };
 
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 34890c54bd64..46c237b0e694 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -873,6 +873,7 @@ static const char *slave_sws[] = {
 	"Speaker Playback Switch",
 	"External Speaker Playback Switch",
 	"Speaker2 Playback Switch",
+	"IEC958 Playback Switch",
 	NULL
 };