diff --git a/mm/migrate.c b/mm/migrate.c
index a65ff72..f53838f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -537,7 +537,8 @@
 	 * Please do not reorder this without considering how mm/ksm.c's
 	 * get_ksm_page() depends upon ksm_migrate_page() and PageSwapCache().
 	 */
-	ClearPageSwapCache(page);
+	if (PageSwapCache(page))
+		ClearPageSwapCache(page);
 	ClearPagePrivate(page);
 	set_page_private(page, 0);