diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 65133436fe3dfd22629850633f78572ba9c61fed..31c512410a994b1dd8b70e24781c56ecb2e28962 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4314,7 +4314,7 @@ void setup_per_zone_pages_min(void)
  *    1TB     101        10GB
  *   10TB     320        32GB
  */
-void setup_per_zone_inactive_ratio(void)
+static void setup_per_zone_inactive_ratio(void)
 {
 	struct zone *zone;