diff --git a/homeassistant/components/conversation/default_agent.py b/homeassistant/components/conversation/default_agent.py
index 731b6ead527..57ac5e2cc58 100644
--- a/homeassistant/components/conversation/default_agent.py
+++ b/homeassistant/components/conversation/default_agent.py
@@ -184,7 +184,7 @@ class DefaultAgent(ConversationEntity):
         )
 
     @core.callback
-    def _filter_state_changes(self, event_data: EventStateChangedData) -> bool:
+    def _filter_state_changes(self, event_data: core.EventStateChangedData) -> bool:
         """Filter state changed events."""
         return not event_data["old_state"] or not event_data["new_state"]