diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 6433e65c9507d20a65be6c0b14af1275c30e0c40..46774924957643874171c1c4e0dfd9a20672d2f3 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -1774,6 +1774,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
 		.name = "HP/Compaq nx7010",
 		.type = AC97_TUNE_MUTE_LED
         },
+	{
+		.subvendor = 0x1014,
+		.subdevice = 0x0534,
+		.name = "ThinkPad X31",
+		.type = AC97_TUNE_INV_EAPD
+	},
 	{
 		.subvendor = 0x1014,
 		.subdevice = 0x1f00,