diff --git a/drivers/char/agp/ali-agp.c b/drivers/char/agp/ali-agp.c
index dc8d1a90971f7..58f26ed2a96b2 100644
--- a/drivers/char/agp/ali-agp.c
+++ b/drivers/char/agp/ali-agp.c
@@ -346,7 +346,7 @@ static int __devinit agp_ali_probe(struct pci_dev *pdev,
 			devs[j].chipset_name = "M1641";
 			break;
 		case 0x43:
-			devs[j].chipset_name = "M????";
+			devs[j].chipset_name = "M1621";
 			break;
 		case 0x47:
 			devs[j].chipset_name = "M1647";