diff --git a/gui/mainwindow.py b/gui/mainwindow.py
index 4ec00ee..af7621b 100644
--- a/gui/mainwindow.py
+++ b/gui/mainwindow.py
@@ -45,3 +45,7 @@ def toggle_live_sync(self):
     def show_offset_window(self):
         self.gui_root.offset_window = OffsetWindow(self.gui_root)
         self.gui_root.offset_window.show()
+
+    def closeEvent(self, event):
+        event.accept()
+        self.gui_root.app.quit()