diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c
index 0d20006..cdb41a1 100644
--- a/fs/hfs/bnode.c
+++ b/fs/hfs/bnode.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/pagemap.h>
+#include <linux/slab.h>
 #include <linux/swap.h>
 
 #include "btree.h"