diff --git a/Line.py b/Line.py
index b576365..2eeb506 100644
--- a/Line.py
+++ b/Line.py
@@ -1,4 +1,6 @@
 
+from Shape import Shape
+
 class Line(Shape):
     def __init__(self, x0, y0, x1, y1):
         self.vars = [x0, y0, x1, y1]