diff --git a/gluon/contrib/pysimplesoap/server.py b/gluon/contrib/pysimplesoap/server.py
index fb971494..b3175936 100755
--- a/gluon/contrib/pysimplesoap/server.py
+++ b/gluon/contrib/pysimplesoap/server.py
@@ -235,7 +235,7 @@ class SoapDispatcher(object):
             body.marshall("%s:Fault" % soap_ns, fault, ns=False)
         else:
             # return normal value
-            res = body.add_child("%sResponse" % name, ns=prefix)
+            res = body.add_child("%sResponse" % name, ns=self.namespace)
             if not prefix:
                 res['xmlns'] = self.namespace  # add target namespace