diff --git a/Lib/lib-tk/turtle.py b/Lib/lib-tk/turtle.py
index d5b445a..82dd759 100644
--- a/Lib/lib-tk/turtle.py
+++ b/Lib/lib-tk/turtle.py
@@ -259,7 +259,7 @@
         dx = distance * cos(self._angle*self._invradian)
         dy = distance * sin(self._angle*self._invradian)
         self._delete_turtle()
-        self._arrow = _canvas.create_line(x-dx,y+dy,x,y,
+        self._arrow = self._canvas.create_line(x-dx,y+dy,x,y,
                                           width=self._width,
                                           arrow="last",
                                           capstyle="round",