diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
index ee5821042fcc947d0994a9c6c6c7a6118cf84d4f..d92a5a2d36d40c434ee833543275b6e296ef192b 100644
--- a/arch/score/include/asm/page.h
+++ b/arch/score/include/asm/page.h
@@ -2,10 +2,11 @@
 #define _ASM_SCORE_PAGE_H
 
 #include <linux/pfn.h>
+#include <linux/const.h>
 
 /* PAGE_SHIFT determines the page size */
 #define PAGE_SHIFT	(12)
-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
 #ifdef __KERNEL__