diff --git a/fs/aufs/vdir.c b/fs/aufs/vdir.c
index 8fe3067..b68ecbc 100644
--- a/fs/aufs/vdir.c
+++ b/fs/aufs/vdir.c
@@ -520,7 +520,7 @@ static int read_vdir(struct file *file, int may_read)
 	} else if (may_read
 		   && (inode->i_version != vdir->vd_version
 		       || time_after(jiffies, vdir->vd_jiffy + expire))) {
-		LKTRTrace("iver %lu, vdver %lu, exp %lu\n",
+		LKTRTrace("iver %llu, vdver %lu, exp %lu\n",
 			  inode->i_version, vdir->vd_version,
 			  vdir->vd_jiffy + expire);
 		do_read = 1;