diff --git a/migrations/20250716070056-fixup-linode-objectstorage-settings.js b/migrations/20250716070056-fixup-linode-objectstorage-settings.js
new file mode 100644
index 000000000..1d8cf8e38
--- /dev/null
+++ b/migrations/20250716070056-fixup-linode-objectstorage-settings.js
@@ -0,0 +1,34 @@
+'use strict';
+
+function s3like(provider) {
+  return provider === 's3' || provider === 'minio' || provider === 's3-v4-compat'
+    || provider === 'exoscale-sos' || provider === 'digitalocean-spaces' || provider === 'hetzner-objectstorage'
+    || provider === 'scaleway-objectstorage' || provider === 'wasabi' || provider === 'backblaze-b2' || provider === 'cloudflare-r2'
+    || provider === 'linode-objectstorage' || provider === 'ovh-objectstorage' || provider === 'ionos-objectstorage'
+    || provider === 'vultr-objectstorage' || provider === 'upcloud-objectstorage' || provider === 'idrive-e2'
+    || provider === 'contabo-objectstorage';
+}
+
+exports.up = async function (db) {
+    const result = await db.runSql('SELECT * FROM settings WHERE name=?', [ 'backup_storage' ]);
+    if (!result.length) return;
+
+    const storageConfig = JSON.parse(result[0].value);
+    if (!s3like(storageConfig.provider)) return;
+
+    if (storageConfig.endpoint && !storageConfig.endpoint.match(/^(http:|https:)\/\//)) {
+        console.log('migrating backup provider endpoint to https');
+        storageConfig.endpoint = `https://${storageConfig.endpoint}`;
+    }
+
+    if (storageConfig.provider === 'linode-objectstorage') { // in some old release, we didn't set the region correctly
+        const match = storageConfig.endpoint.match(/^https:\/\/(.*).linodeobjects.com$/);
+        storageConfig.region = match ? match[1] : storageConfig.region;
+    }
+
+    await db.runSql('UPDATE settings SET value=? WHERE name=?', [ JSON.stringify(storageConfig), 'backup_storage']);
+
+};
+
+exports.down = async function (db) {
+};
diff --git a/src/storage/s3.js b/src/storage/s3.js
index 4bfa20d65..bbd4c7bba 100644
--- a/src/storage/s3.js
+++ b/src/storage/s3.js
@@ -46,7 +46,8 @@ function S3_NOT_FOUND(error) {
 }
 
 function formatError(error) {
-    return `code: ${error.Code} message: ${error.message} HTTP: ${error.$metadata.httpStatusCode}`;
+    // $metadata can be undefined if HTTP request was never sent
+    return `code: ${error.Code} message: ${error.message} HTTP: ${error.$metadata?.httpStatusCode}`;
 }
 
 const RETRY_STRATEGY = new ConfiguredRetryStrategy(10 /* max attempts */, (/* attempt */) => 20000 /* constant backoff */);