diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 14363b96b6afafa74a80c2c66553c8d914064268..f9eaa4a4f5f319f4b0e7a6b398183a5b2060a959 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1164,7 +1164,8 @@ static void handle_quota_files(struct super_block *s, char **qf_names,
 			kfree(REISERFS_SB(s)->s_qf_names[i]);
 		REISERFS_SB(s)->s_qf_names[i] = qf_names[i];
 	}
-	REISERFS_SB(s)->s_jquota_fmt = *qfmt;
+	if (*qfmt)
+		REISERFS_SB(s)->s_jquota_fmt = *qfmt;
 }
 #endif