diff --git a/include/asm-blackfin/page.h b/include/asm-blackfin/page.h
index ffad947..8bc8671 100644
--- a/include/asm-blackfin/page.h
+++ b/include/asm-blackfin/page.h
@@ -4,7 +4,11 @@
 /* PAGE_SHIFT determines the page size */
 
 #define PAGE_SHIFT	12
+#ifdef __ASSEMBLY__
+#define PAGE_SIZE	(1 << PAGE_SHIFT)
+#else
 #define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#endif
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
 #ifdef __KERNEL__