diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 01da10bd8715a3b639a7df5019d5bf086f902c68..2fcd70d64da2d99073533d3ce4e9f8c01220b41a 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1598,7 +1598,7 @@ static struct snd_pci_quirk stac92hd73xx_cfg_tbl[] = {
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02bd,
 				"Dell Studio 1557", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02fe,
-				"Dell Studio XPS 1645", STAC_DELL_M6_BOTH),
+				"Dell Studio XPS 1645", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0413,
 				"Dell Studio 1558", STAC_DELL_M6_DMIC),
 	{} /* terminator */