diff --git a/arch/arm/mach-omap1/sleep.S b/arch/arm/mach-omap1/sleep.S
index 0e62874..a908c51 100644
--- a/arch/arm/mach-omap1/sleep.S
+++ b/arch/arm/mach-omap1/sleep.S
@@ -36,6 +36,8 @@
 
 #include <asm/assembler.h>
 
+#include <mach/hardware.h>
+
 #include "iomap.h"
 #include "pm.h"