diff --git a/gramps/plugins/gramplet/todo.py b/gramps/plugins/gramplet/todo.py
index be8aaa910..f2d361351 100644
--- a/gramps/plugins/gramplet/todo.py
+++ b/gramps/plugins/gramplet/todo.py
@@ -49,7 +49,7 @@ class ToDo(Gramplet):
         hbox.pack_start(self.left, False, False, 0)
         self.right = SimpleButton(Gtk.STOCK_GO_FORWARD, self.right_clicked)
         self.right.set_tooltip_text(_('Next To Do note'))
-        self.right.set_sensitive(homogeneous=False)
+        self.right.set_sensitive(False)
         hbox.pack_start(self.right, False, False, 0)
         self.edit = SimpleButton(Gtk.STOCK_EDIT, self.edit_clicked)
         self.edit.set_tooltip_text(_('Edit the selected To Do note'))