diff --git a/mm/vmscan.c b/mm/vmscan.c
index da7c3a2304a7..062767d159da 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2506,7 +2506,7 @@ void scan_zone_unevictable_pages(struct zone *zone)
  * that has possibly/probably made some previously unevictable pages
  * evictable.
  */
-void scan_all_zones_unevictable_pages(void)
+static void scan_all_zones_unevictable_pages(void)
 {
 	struct zone *zone;