diff --git a/include/asm-arm/arch-ixp2000/io.h b/include/asm-arm/arch-ixp2000/io.h
index 083462668e184a8953ef49ed8eb9753c38d35d24..e5c742bc233039285abfa0be5d4450da2994c1a4 100644
--- a/include/asm-arm/arch-ixp2000/io.h
+++ b/include/asm-arm/arch-ixp2000/io.h
@@ -27,8 +27,8 @@
  * since that isn't available on the A? revisions we just keep doing
  * things manually.
  */
-#define alignb(addr)		(void __iomem *)((unsigned long)addr ^ 3)
-#define alignw(addr)		(void __iomem *)((unsigned long)addr ^ 2)
+#define alignb(addr)		(void __iomem *)((unsigned long)(addr) ^ 3)
+#define alignw(addr)		(void __iomem *)((unsigned long)(addr) ^ 2)
 
 #define outb(v,p)		__raw_writeb((v),alignb(___io(p)))
 #define outw(v,p)		__raw_writew((v),alignw(___io(p)))