diff --git a/mm/swap_state.c b/mm/swap_state.c
index db8a3d3..d7af296 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -15,6 +15,7 @@
 #include <linux/buffer_head.h>
 #include <linux/backing-dev.h>
 #include <linux/pagevec.h>
+#include <linux/migrate.h>
 
 #include <asm/pgtable.h>