diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 3b1a9d4fcbc6..89c4c3636161 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -278,7 +278,7 @@ static void __init l2cr_init(void)
 }
 #endif
 
-void __init pmac_setup_arch(void)
+static void __init pmac_setup_arch(void)
 {
 	struct device_node *cpu, *ic;
 	int *fp;