diff --git a/pylot/core/util/widgets.py b/pylot/core/util/widgets.py
index 482e309a..c4507ede 100644
--- a/pylot/core/util/widgets.py
+++ b/pylot/core/util/widgets.py
@@ -2457,6 +2457,7 @@ class TuneAutopicker(QWidget):
         self.parameter = self.parent()._inputs
         self.fig_dict = self.parent().fig_dict
         self.data = Data()
+        self.pdlg_widget = None
         self.init_main_layouts()
         self.init_eventlist()
         self.init_figure_tabs()