diff --git a/mm/internal.h b/mm/internal.h
index 9b6a6c4..2f80d03 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -78,7 +78,7 @@
  */
 extern int isolate_lru_page(struct page *page);
 extern void putback_lru_page(struct page *page);
-extern bool zone_reclaimable(struct zone *zone);
+extern bool pgdat_reclaimable(struct pglist_data *pgdat);
 
 /*
  * in mm/rmap.c: