diff --git a/mbuild/bond.py b/mbuild/bond.py
index <HASH>..<HASH> 100755
--- a/mbuild/bond.py
+++ b/mbuild/bond.py
@@ -46,18 +46,10 @@ class Bond(object):
     def atom1(self):

         return self._atom1

 

-    @atom1.setter

-    def atom1(self, v):

-        raise TypeError  # what's going on here?

-

     @property

     def atom2(self):

         return self._atom2

 

-    @atom2.setter

-    def atom2(self, v):

-        raise TypeError

-

     def ancestors(self):

         """Generate all ancestors of the Compound recursively.
bond's atom1 and atom2 properties are read-only