diff --git a/addons/licenses/plugin.gd b/addons/licenses/plugin.gd
index bcec5fd..c34d39a 100644
--- a/addons/licenses/plugin.gd
+++ b/addons/licenses/plugin.gd
@@ -12,7 +12,7 @@ func _get_plugin_name() -> String:
     return "Licenses"
 
 func _enter_tree() -> void:
-    self.set_project_setting(Licenses.DATA_FILE, "res://licenses.json", TYPE_STRING, PROPERTY_HINT_FILE)
+    set_project_setting(Licenses.DATA_FILE, "res://licenses.json", TYPE_STRING, PROPERTY_HINT_FILE)
 
     self.export_plugin = ExportPlugin.new()
     self.add_export_plugin(self.export_plugin)
@@ -23,6 +23,7 @@ func _enter_tree() -> void:
 
 func _exit_tree() -> void:
     self.remove_tool_menu_item(self._get_plugin_name() + "...")
+    self.licenses_dialog.queue_free()
     self.remove_export_plugin(self.export_plugin)
 
 func _show_popup() -> void: