diff --git a/lib/py/src/Thrift.py b/lib/py/src/Thrift.py
index ef655ea..81fe8cf 100644
--- a/lib/py/src/Thrift.py
+++ b/lib/py/src/Thrift.py
@@ -90,7 +90,7 @@
 
     def __init__(self, message=None):
         Exception.__init__(self, message)
-        self.message = message
+        super(TException, self).__setattr__("message", message)
 
 
 class TApplicationException(TException):