diff --git a/include/common.h b/include/common.h
index 9ef93444125c458a8e602db73f97313857fd94f1..54083f10c5428232818c31fc1f8fe777e2eefa19 100644
--- a/include/common.h
+++ b/include/common.h
@@ -468,7 +468,7 @@ int	prt_8260_clks (void);
 #elif defined(CONFIG_MPC5xxx)
 int	prt_mpc5xxx_clks (void);
 #endif
-#if defined(CONFIG_MPC512x)
+#if defined(CONFIG_MPC512X)
 int	prt_mpc512xxx_clks (void);
 #endif
 #if defined(CONFIG_MPC8220)