diff --git a/linesegment.py b/linesegment.py
index 2e2fdc5..a3e1d3d 100644
--- a/linesegment.py
+++ b/linesegment.py
@@ -60,7 +60,7 @@ class LineSegment:
     def get_max_y(self):
         """Get the highest y coordinate of the line segment"""
         return max(self.__startpoint.get_y(), self.__endpoint.get_y())
-    def str(self):
+    def __str__(self):
         """Return the line segment values as string."""
         return self.__startpoint.str() + "-->" + self.__endpoint.str()
     def draw(self):