diff --git a/services/storage/src/simcore_service_storage/dsm.py b/services/storage/src/simcore_service_storage/dsm.py
index 7b517e5bdb3..8bb62efb76c 100644
--- a/services/storage/src/simcore_service_storage/dsm.py
+++ b/services/storage/src/simcore_service_storage/dsm.py
@@ -674,7 +674,7 @@ async def deep_copy_project_simcore_s3(
 
             # Step 2: List all references in outputs that point to datcore and copy over
             for node_id, node in destination_project["workbench"].items():
-                outputs = node.get("outputs", [])
+                outputs: Dict = node.get("outputs", {})
                 for _output_key, output in outputs.items():
                     if "store" in output and output["store"] == DATCORE_ID:
                         src = output["path"]