diff --git a/src/event_handlers/stateful_event_handler.py b/src/event_handlers/stateful_event_handler.py
index 520d958..7e47e5a 100644
--- a/src/event_handlers/stateful_event_handler.py
+++ b/src/event_handlers/stateful_event_handler.py
@@ -25,8 +25,6 @@ class StatefulEventHandler(EventHandlerBase):
             if self.generator is None:
                 self.generator = self.event_handler_function(data_json, self)
             response_anchor, response_data = next(self.generator)
-            if response_anchor is None:
-                return
             if response_anchor not in self.subscriptions:
                 self.subscriptions.add(response_anchor)
                 self.zmq_sub_socket.setsockopt_string(zmq.SUBSCRIBE, response_anchor)