diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c
index bcbc94540e45..41e476e571d7 100644
--- a/arch/arm/mach-sa1100/simpad.c
+++ b/arch/arm/mach-sa1100/simpad.c
@@ -19,6 +19,7 @@
 
 #include <mach/hardware.h>
 #include <asm/setup.h>
+#include <asm/irq.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>