diff --git a/api/or_dependencies.py b/api/or_dependencies.py
index 77bcb9c44..31b95574f 100644
--- a/api/or_dependencies.py
+++ b/api/or_dependencies.py
@@ -34,8 +34,9 @@ class ORRoute(APIRoute):
             if isinstance(response, JSONResponse):
                 response: JSONResponse = response
                 body = json.loads(response.body.decode('utf8'))
-                body=helper.cast_session_id_to_string(body)
-                response = JSONResponse(content=body, status_code=response.status_code, headers=response.headers,
+                body = helper.cast_session_id_to_string(body)
+                response = JSONResponse(content=body, status_code=response.status_code,
+                                        headers={k: v for k, v in response.headers.items() if k != "content-length"},
                                         media_type=response.media_type, background=response.background)
                 if response.status_code == 200 \
                         and body is not None and isinstance(body, dict) \
diff --git a/ee/api/or_dependencies.py b/ee/api/or_dependencies.py
index 0d0ea342a..2671948d8 100644
--- a/ee/api/or_dependencies.py
+++ b/ee/api/or_dependencies.py
@@ -39,7 +39,8 @@ class ORRoute(APIRoute):
                 response: JSONResponse = response
                 body = json.loads(response.body.decode('utf8'))
                 body = helper.cast_session_id_to_string(body)
-                response = JSONResponse(content=body, status_code=response.status_code, headers=response.headers,
+                response = JSONResponse(content=body, status_code=response.status_code,
+                                        headers={k: v for k, v in response.headers.items() if k != "content-length"},
                                         media_type=response.media_type, background=response.background)
                 if response.status_code == 200 \
                         and body is not None and isinstance(body, dict) \