diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 472426a..6cbd1b6 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -817,10 +817,10 @@
 extern struct mutex zonelists_mutex;
 void build_all_zonelists(pg_data_t *pgdat, struct zone *zone);
 void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx);
-bool zone_watermark_ok(struct zone *z, int order, unsigned long mark,
-		int classzone_idx, int alloc_flags);
-bool zone_watermark_ok_safe(struct zone *z, int order, unsigned long mark,
-		int classzone_idx, int alloc_flags);
+bool zone_watermark_ok(struct zone *z, unsigned int order,
+		unsigned long mark, int classzone_idx, int alloc_flags);
+bool zone_watermark_ok_safe(struct zone *z, unsigned int order,
+		unsigned long mark, int classzone_idx, int alloc_flags);
 enum memmap_context {
 	MEMMAP_EARLY,
 	MEMMAP_HOTPLUG,