diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 841ac25..f63a09c 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -19,6 +19,7 @@
 #include <linux/bitops.h>
 #include <asm/byteorder.h>
 
+#include "ufs.h"
 #include "swab.h"
 #include "util.h"