diff --git a/crates/filemeta/tests/persisted_metadata_keys.rs b/crates/filemeta/tests/persisted_metadata_keys.rs
new file mode 100644
index 000000000..f05607921
--- /dev/null
+++ b/crates/filemeta/tests/persisted_metadata_keys.rs
@@ -0,0 +1,29 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use s3s::header::{
+    X_AMZ_OBJECT_LOCK_LEGAL_HOLD, X_AMZ_OBJECT_LOCK_MODE, X_AMZ_OBJECT_LOCK_RETAIN_UNTIL_DATE, X_AMZ_RESTORE,
+    X_AMZ_SERVER_SIDE_ENCRYPTION,
+};
+
+#[test]
+fn persisted_metadata_keys_are_byte_stable() {
+    // These HTTP-header constants are also persisted xl.meta map keys. A drift can make an
+    // existing WORM retention appear absent or make a restored object's data directory reclaimable.
+    assert_eq!(X_AMZ_OBJECT_LOCK_LEGAL_HOLD.as_str(), "x-amz-object-lock-legal-hold");
+    assert_eq!(X_AMZ_OBJECT_LOCK_MODE.as_str(), "x-amz-object-lock-mode");
+    assert_eq!(X_AMZ_OBJECT_LOCK_RETAIN_UNTIL_DATE.as_str(), "x-amz-object-lock-retain-until-date");
+    assert_eq!(X_AMZ_RESTORE.as_str(), "x-amz-restore");
+    assert_eq!(X_AMZ_SERVER_SIDE_ENCRYPTION.as_str(), "x-amz-server-side-encryption");
+}