diff --git a/XDistance.py b/XDistance.py
index 7e48326..39a33e7 100644
--- a/XDistance.py
+++ b/XDistance.py
@@ -10,8 +10,8 @@ class XDistance(Constraint):
         self.dist = dist
 
     def toEqu(self):
-        varrefs1 = self.shape1.toEqu(pt1)[0]
-        varrefs2 = self.shape2.toEqu(pt2)[0]
+        varrefs1 = self.shape1.toEqu(self.pt1)[0]
+        varrefs2 = self.shape2.toEqu(self.pt2)[0]
         coeffs = []
         for i in range(len(varrefs1)):
             coeffs.append((-1 * varrefs1[i], (self.shape1, i)))
diff --git a/YDistance.py b/YDistance.py
index b98f244..04ee075 100644
--- a/YDistance.py
+++ b/YDistance.py
@@ -10,8 +10,8 @@ class YDistance(Constraint):
         self.dist = dist
 
     def toEqu(self):
-        varrefs1 = self.shape1.toEqu(pt1)[1]
-        varrefs2 = self.shape2.toEqu(pt2)[1]
+        varrefs1 = self.shape1.toEqu(self.pt1)[1]
+        varrefs2 = self.shape2.toEqu(self.pt2)[1]
         coeffs = []
         for i in range(len(varrefs1)):
             coeffs.append((-1 * varrefs1[i], (self.shape1, i)))