diff --git a/include/linux/mm.h b/include/linux/mm.h
index c36297faf7cb16ae1d3a022bdcda8003c7e54236..2862009f9573f97004a6f1376c42429edfa0b355 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -497,8 +497,8 @@ static inline void set_compound_order(struct page *page, unsigned long order)
 #define NODES_PGSHIFT		(NODES_PGOFF * (NODES_WIDTH != 0))
 #define ZONES_PGSHIFT		(ZONES_PGOFF * (ZONES_WIDTH != 0))
 
-/* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allcator */
-#ifdef NODE_NOT_IN_PAGEFLAGS
+/* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allocator */
+#ifdef NODE_NOT_IN_PAGE_FLAGS
 #define ZONEID_SHIFT		(SECTIONS_SHIFT + ZONES_SHIFT)
 #define ZONEID_PGOFF		((SECTIONS_PGOFF < ZONES_PGOFF)? \
 						SECTIONS_PGOFF : ZONES_PGOFF)