diff --git a/python/knext/knext/common/base/client.py b/python/knext/knext/common/base/client.py
index 3168efd6..90d3958b 100644
--- a/python/knext/knext/common/base/client.py
+++ b/python/knext/knext/common/base/client.py
@@ -41,11 +41,7 @@ class Client(ABC):
             project_id (int): The ID of the user's project. If not provided, the value from the environment variable `KAG_PROJECT_ID` is used.
         """
         self._host_addr = host_addr or env.host_addr
-        # self._project_id = project_id or env.id
-
-    @property
-    def _project_id(self):
-        return env.id
+        self._project_id = project_id or env.id
 
     @staticmethod
     def serialize(obj):
diff --git a/python/knext/knext/reasoner/client.py b/python/knext/knext/reasoner/client.py
index 059e76c0..c1fd83d3 100644
--- a/python/knext/knext/reasoner/client.py
+++ b/python/knext/knext/reasoner/client.py
@@ -29,7 +29,7 @@ class ReasonerClient(Client):
     """SPG Reasoner Client."""
 
     def __init__(self, host_addr: str = None, project_id: int = None, namespace=None):
-        super().__init__(host_addr, project_id)
+        super().__init__(host_addr, str(project_id))
         self._rest_client: rest.ReasonerApi = rest.ReasonerApi(
             api_client=ApiClient(configuration=Configuration(host=host_addr))
         )