diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 8a75901..501b7f8 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -521,6 +521,7 @@
 		brelse(sbh[1]);
 		sbh[1] = NULL;
 		sbp[1] = NULL;
+		valid[1] = 0;
 		swp = 0;
 	}
 	if (!valid[swp]) {