diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index 37fa7ed..7124327 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -63,7 +63,9 @@
 	struct ubifs_lp_stats lst;
 
 	dbg_cmt("start");
-	if (c->ro_media) {
+	ubifs_assert(!c->ro_media);
+
+	if (c->ro_error) {
 		err = -EROFS;
 		goto out_up;
 	}