diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 43fc245d9a62..1b1203539ea6 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -419,7 +419,7 @@ struct hda_bus {
 
 	/* codec linked list */
 	struct list_head codec_list;
-	struct hda_codec *caddr_tbl[HDA_MAX_CODEC_ADDRESS]; /* caddr -> codec */
+	struct hda_codec *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; /* caddr -> codec */
 
 	struct semaphore cmd_mutex;