diff --git a/frontends/src/jp/xmlui_manager.py b/frontends/src/jp/xmlui_manager.py
index 6386c983..dd2e699b 100644
--- a/frontends/src/jp/xmlui_manager.py
+++ b/frontends/src/jp/xmlui_manager.py
@@ -484,7 +484,7 @@ class XMLUIDialog(xmlui_manager.XMLUIDialog):
     dialog_factory = WidgetFactory()
     readonly = False
 
-    def show(self):
+    def show(self, dummy=None):
         self.dlg.show()
 
     def _xmluiClose(self):