diff --git a/scxml_converter/src/scxml_converter/scxml_entries/scxml_ros_action_client.py b/scxml_converter/src/scxml_converter/scxml_entries/scxml_ros_action_client.py
index 1fd034b2..860c498b 100644
--- a/scxml_converter/src/scxml_converter/scxml_entries/scxml_ros_action_client.py
+++ b/scxml_converter/src/scxml_converter/scxml_entries/scxml_ros_action_client.py
@@ -124,6 +124,15 @@ def check_validity(self) -> bool:
                                            self._reject_target)
         return valid_name and valid_accept and valid_reject
 
+    def instantiate_bt_events(self, _: str):
+        # We do not expect a body with BT ports to be substituted
+        pass
+
+    def update_bt_ports_values(self, _) -> None:
+        """Update the values of potential entries making use of BT ports."""
+        # We do not expect a body with BT ports to be substituted
+        pass
+
     def check_valid_ros_instantiations(self,
                                        ros_declarations: ScxmlRosDeclarationsContainer) -> bool:
         assert isinstance(ros_declarations, ScxmlRosDeclarationsContainer), \
diff --git a/scxml_converter/src/scxml_converter/scxml_entries/scxml_transition.py b/scxml_converter/src/scxml_converter/scxml_entries/scxml_transition.py
index 4fd97341..0b085f71 100644
--- a/scxml_converter/src/scxml_converter/scxml_entries/scxml_transition.py
+++ b/scxml_converter/src/scxml_converter/scxml_entries/scxml_transition.py
@@ -103,7 +103,7 @@ def instantiate_bt_events(self, instance_id: str):
                 # Those are expected to be only ticks
                 if is_bt_event(event_str):
                     self._events[event_id] = replace_bt_event(event_str, instance_id)
-        # The body of a transition is needs to be replaced on derived classes, too
+        # The body of a transition needs to be replaced on derived classes, too
         instantiate_exec_body_bt_events(self._body, instance_id)
 
     def update_bt_ports_values(self, bt_ports_handler: BtPortsHandler) -> None: