diff --git a/src/View/MainWindow.py b/src/View/MainWindow.py
index 1d8cbee4..7a893d4f 100644
--- a/src/View/MainWindow.py
+++ b/src/View/MainWindow.py
@@ -371,6 +371,8 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
         self.conf.set_close_correctly()
         self.set_title()
 
+        self._close_sub_window()
+
     def update_enable_action(self):
         """Update status of action componante