diff --git a/arch/arm/mach-iop13xx/setup.c b/arch/arm/mach-iop13xx/setup.c
index 5fbeb28d04bb..9a46bcd5f18e 100644
--- a/arch/arm/mach-iop13xx/setup.c
+++ b/arch/arm/mach-iop13xx/setup.c
@@ -24,6 +24,7 @@
 #include <asm/mach/map.h>
 #include <asm/hardware.h>
 #include <asm/irq.h>
+#include <asm/io.h>
 
 #define IOP13XX_UART_XTAL 33334000
 #define IOP13XX_SETUP_DEBUG 0