diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index e26c02a..5692cf7 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -52,6 +52,7 @@
 #include "ubifs.h"
 #include <linux/mount.h>
 #include <linux/namei.h>
+#include <linux/slab.h>
 
 static int read_block(struct inode *inode, void *addr, unsigned int block,
 		      struct ubifs_data_node *dn)