diff --git a/mm/mlock.c b/mm/mlock.c
index e1e2b1207bf2..96f001041928 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -175,7 +175,7 @@ static void __munlock_isolation_failed(struct page *page)
  */
 unsigned int munlock_vma_page(struct page *page)
 {
-	unsigned int nr_pages;
+	int nr_pages;
 	struct zone *zone = page_zone(page);
 
 	/* For try_to_munlock() and to serialize with page migration */