diff --git a/tryton/gui/window/view_form/model/group.py b/tryton/gui/window/view_form/model/group.py
index d4b522b3ce..1b6c09b39b 100644
--- a/tryton/gui/window/view_form/model/group.py
+++ b/tryton/gui/window/view_form/model/group.py
@@ -187,6 +187,7 @@ class ModelRecordGroup(SignalEvent):
             self.models.insert(position, model)
         self.current_idx = position
         model.parent = self.parent
+        model.window = self.window
         model.signal_connect(self, 'record-changed', self._record_changed)
         return model