diff --git a/gramps/plugins/tool/findloop.py b/gramps/plugins/tool/findloop.py
index 3a42d9244..52121197c 100644
--- a/gramps/plugins/tool/findloop.py
+++ b/gramps/plugins/tool/findloop.py
@@ -87,7 +87,7 @@ class FindLoop(ManagedWindow):
 
         # start the progress indicator
         self.progress = ProgressMeter(self.title, _('Starting'),
-                                      parent=self.window)
+                                      parent=uistate.window)
         self.progress.set_pass(_('Looking for possible loop for each person'),
                                self.db.get_number_of_people())