diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index fb9ef132f13b..1dd9dbeeef6e 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -426,10 +426,10 @@ static void print_digital_conv(struct snd_info_buffer *buffer,
 
 static const char *get_pwr_state(u32 state)
 {
-	static const char * const buf[4] = {
-		"D0", "D1", "D2", "D3"
+	static const char * const buf[] = {
+		"D0", "D1", "D2", "D3", "D3cold"
 	};
-	if (state < 4)
+	if (state < ARRAY_SIZE(buf))
 		return buf[state];
 	return "UNKNOWN";
 }