diff --git a/src/northbridge/amd/amdk8/raminit_f.c b/src/northbridge/amd/amdk8/raminit_f.c
index 01241f05c8..ff3eb3914d 100644
--- a/src/northbridge/amd/amdk8/raminit_f.c
+++ b/src/northbridge/amd/amdk8/raminit_f.c
@@ -2410,7 +2410,7 @@ static void set_TT(const struct mem_controller *ctrl,
 	uint32_t reg;
 
 	if ((val < TT_MIN) || (val > TT_MAX)) {
-		printk(BIOS_ERR, str);
+		printk(BIOS_ERR, "%s", str);
 		die(" Unknown\n");
 	}