diff --git a/commands/ubi.c b/commands/ubi.c
index 5e27584..de5633c 100644
--- a/commands/ubi.c
+++ b/commands/ubi.c
@@ -82,7 +82,7 @@
 	close(fd_vol);
 error_img:
 	close(fd_img);
-	return ret;
+	return ret ? 1 : 0;
 }