diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 4bd82a37a4c8..03ee9dd04913 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -136,7 +136,7 @@ extern struct hda_ctl_ops snd_hda_bind_sw;	/* for bind-switch */
 
 struct hda_bind_ctls {
 	struct hda_ctl_ops *ops;
-	long values[];
+	unsigned long values[];
 };
 
 int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol,