diff --git a/paramiko/dsskey.py b/paramiko/dsskey.py
index d945e5f..d7534ba 100644
--- a/paramiko/dsskey.py
+++ b/paramiko/dsskey.py
@@ -56,7 +56,6 @@ class DSSKey (PKey):
             self.g = msg.get_mpint()
             self.y = msg.get_mpint()
         self.size = util.bit_length(self.p)
-        self.x = 0L
 
     def __str__(self):
         m = Message()