diff --git a/arch/arm/mach-imx/mach-mx31lite.c b/arch/arm/mach-imx/mach-mx31lite.c
index f033a57d5694..a3250bc7f114 100644
--- a/arch/arm/mach-imx/mach-mx31lite.c
+++ b/arch/arm/mach-imx/mach-mx31lite.c
@@ -245,7 +245,7 @@ static struct map_desc mx31lite_io_desc[] __initdata = {
 /*
  * Set up static virtual mappings.
  */
-void __init mx31lite_map_io(void)
+static void __init mx31lite_map_io(void)
 {
 	mx31_map_io();
 	iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));