diff --git a/package.json b/package.json
index 7f0abbc..eb1a8ed 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bitcomposer/moleculer-aws-s3",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "An aws s3 sdk wrapper as a service for the moleculer framework",
   "main": "index.js",
   "scripts": {
diff --git a/src/service.js b/src/service.js
index dd4df43..781afbc 100644
--- a/src/service.js
+++ b/src/service.js
@@ -182,7 +182,7 @@ module.exports = {
           const res = await this.client.send(new ListObjectsCommand(params))
           params.Marker = res?.NextMarker
           truncated = res?.IsTruncated
-          objectList = objectList.concat(res.Contents)
+          objectList = objectList.concat(res.Contents ?? [])
         } while (truncated)
 
         return objectList
@@ -220,7 +220,7 @@ module.exports = {
         do {
           const res = await this.client.send(new ListObjectsV2Command(params))
           params.ContinuationToken = res?.NextContinuationToken
-          objectList = objectList.concat(res?.Contents)
+          objectList = objectList.concat(res?.Contents ?? [])
         } while (params.ContinuationToken !== undefined)
 
         return objectList