diff --git a/main_window.py b/main_window.py
index e680e4e..bdcb6d0 100644
--- a/main_window.py
+++ b/main_window.py
@@ -169,6 +169,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         self.opengl_widget.update()
 
     def _clear_canvas(self):
+        self._reset()
         PointManager.point_set.clear_points()
         refresh_point_list(self)
         self.opengl_widget.update()