diff --git a/XDistance.py b/XDistance.py
index a7a14eb..7e48326 100644
--- a/XDistance.py
+++ b/XDistance.py
@@ -7,7 +7,7 @@ class XDistance(Constraint):
         self.pt1 = pt1
         self.shape2 = shape2
         self.pt2 = pt2
-        self.dist
+        self.dist = dist
 
     def toEqu(self):
         varrefs1 = self.shape1.toEqu(pt1)[0]