diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index abe3d5b9b84b..75162e5f712b 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3779,6 +3779,7 @@ static void alc225_init(struct hda_codec *codec)
 				    AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 
 		msleep(75);
+		alc_update_coef_idx(codec, 0x4a, 3 << 10, 0);
 		alc_update_coefex_idx(codec, 0x57, 0x04, 0x0007, 0x4); /* Hight power */
 	}
 }