diff --git a/src/nbi/service/rest_server/nbi_plugins/ietf_network_slice/ietf_slice_handler.py b/src/nbi/service/rest_server/nbi_plugins/ietf_network_slice/ietf_slice_handler.py
index 030ae8aa01bb1b2625459b113764135e1516dace..408aeeb01f0f539bf7b728d613cb67f677766bb7 100644
--- a/src/nbi/service/rest_server/nbi_plugins/ietf_network_slice/ietf_slice_handler.py
+++ b/src/nbi/service/rest_server/nbi_plugins/ietf_network_slice/ietf_slice_handler.py
@@ -314,7 +314,6 @@ class IETFSliceHandler:
 
     @staticmethod
     def update_connection_group(
-        self,
         slice_name: str,
         updated_connection_group: dict,
         context_client: ContextClient,