diff --git a/behaviours/drop_on_free.gd b/behaviours/drop_on_free.gd
index 2cecd9c..0724866 100644
--- a/behaviours/drop_on_free.gd
+++ b/behaviours/drop_on_free.gd
@@ -9,3 +9,7 @@ func _ready() -> void:
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
 	pass
+
+
+func _on_tree_exiting() -> void:
+	pass # Replace with function body.
diff --git a/behaviours/drop_on_free.tscn b/behaviours/drop_on_free.tscn
index 4cdf271..f1f9efc 100644
--- a/behaviours/drop_on_free.tscn
+++ b/behaviours/drop_on_free.tscn
@@ -4,3 +4,5 @@
 
 [node name="DropOnFree" type="Node2D"]
 script = ExtResource("1_4xihn")
+
+[connection signal="tree_exiting" from="." to="." method="_on_tree_exiting"]