diff --git a/Scripts/hiro_ai.gd b/Scripts/hiro_ai.gd
index 439ba2f..abafd94 100644
--- a/Scripts/hiro_ai.gd
+++ b/Scripts/hiro_ai.gd
@@ -292,7 +292,7 @@ func _on_victory_state_entered():
 	state_machine.set_expression_property("melee_stage", 0)
 	velocity = Vector2.ZERO
 
-func _on_player_been_defeated():
+func _on_player_been_defeated(_by_what: Util.AttackType):
 	state_machine.send_event("has_won")
 
 func _on_align_for_range_state_entered():