diff --git a/yuqei-infra/backup/run-production-backup.py b/yuqei-infra/backup/run-production-backup.py
index 2bce9964..d80eb763 100644
--- a/yuqei-infra/backup/run-production-backup.py
+++ b/yuqei-infra/backup/run-production-backup.py
@@ -671,7 +671,8 @@ def object_storage_mirror_command(
         "/bin/sh",
         values["MINIO_MC_IMAGE"],
         "-ec",
-        """umask 077
+        """set -eu
+umask 077
 mkdir -p "$HOME/.config/rc" /backup/minio
 cat > "$HOME/.config/rc/config.toml"
 exec rc --no-color --no-progress mirror --overwrite "$1" "$2"