diff --git a/brainglobe_registration/registration_widget.py b/brainglobe_registration/registration_widget.py
index 35016fd..3c3480b 100644
--- a/brainglobe_registration/registration_widget.py
+++ b/brainglobe_registration/registration_widget.py
@@ -159,7 +159,7 @@ def __init__(self, napari_viewer: Viewer):
         )
 
         self.parameter_setting_tabs_lists = []
-        self.parameters_tab = QTabWidget()
+        self.parameters_tab = QTabWidget(parent=self)
 
         for transform_type in self.transform_params:
             new_tab = RegistrationParameterListView(