diff --git a/drivers/video/fbdev/sis/sis_main.c b/drivers/video/fbdev/sis/sis_main.c
index 3f12a2dd959a0ade49737a9938654acd14a4233f..1f4c216327f684a2762cf67ecd60744c99100975 100644
--- a/drivers/video/fbdev/sis/sis_main.c
+++ b/drivers/video/fbdev/sis/sis_main.c
@@ -5830,7 +5830,7 @@ static int sisfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 			ivideo->cardnumber++;
 	}
 
-	strncpy(ivideo->myid, chipinfo->chip_name, 30);
+	strlcpy(ivideo->myid, chipinfo->chip_name, sizeof(ivideo->myid));
 
 	ivideo->warncount = 0;
 	ivideo->chip_id = pdev->device;