diff --git a/packages/s3wrapper/src/s3wrapper/s3_client.py b/packages/s3wrapper/src/s3wrapper/s3_client.py
index 7ffc2307d86..981cba36d5e 100644
--- a/packages/s3wrapper/src/s3wrapper/s3_client.py
+++ b/packages/s3wrapper/src/s3wrapper/s3_client.py
@@ -19,6 +19,8 @@ def __init__(self, endpoint, access_key=None, secret_key=None, secure=False):
         self.endpoint = endpoint
         self.access_key = access_key
         self.secret_key = secret_key
+        self.secure = secure
+        self.endpoint_url = ("https://" if secure else "http://") + endpoint
         try:
             self.client = Minio(endpoint,
                 access_key=access_key,
diff --git a/services/docker-compose.yml b/services/docker-compose.yml
index a6847d006b6..54fa59f8e74 100644
--- a/services/docker-compose.yml
+++ b/services/docker-compose.yml
@@ -247,8 +247,10 @@ services:
       - MINIO_ACCESS_KEY=12345678
       - MINIO_SECRET_KEY=12345678
     ports:
-      - "9000"
+      - "9001:9000"
     command: server /data
+    volumes:
+      - minio:/data
   #--------------------------------------------------------------------
   maintenance:
     image: ${DOCKER_REGISTRY:-itisfoundation}/maintenance:${DOCKER_IMAGE_TAG:-latest}
@@ -276,3 +278,4 @@ volumes:
   output:
   log:
   postgres:
+  minio:
diff --git a/services/storage/src/simcore_service_storage/dsm.py b/services/storage/src/simcore_service_storage/dsm.py
index b9a284d7a8b..8d00ef3fde7 100644
--- a/services/storage/src/simcore_service_storage/dsm.py
+++ b/services/storage/src/simcore_service_storage/dsm.py
@@ -240,7 +240,7 @@ async def list_files(self, user_id: str, location: str, uuid_filter: str ="", re
                 # MaG: This is inefficient: Do this automatically when file is modified
                 _loop = asyncio.get_event_loop()
                 session = aiobotocore.get_session(loop=_loop)
-                async with session.create_client('s3', endpoint_url="http://"+self.s3_client.endpoint, aws_access_key_id=self.s3_client.access_key,
+                async with session.create_client('s3', endpoint_url=self.s3_client.endpoint_url, aws_access_key_id=self.s3_client.access_key,
                         aws_secret_access_key=self.s3_client.secret_key) as client:
                     responses = await asyncio.gather(*[client.list_objects_v2(Bucket=d.bucket_name, Prefix=_d) for _d in [__d.object_name for __d in data]])
                     for d, resp in zip(data, responses):