diff --git a/suds/client.py b/suds/client.py
index f97f2d9..a21a3a5 100644
--- a/suds/client.py
+++ b/suds/client.py
@@ -646,7 +646,7 @@ def send(self, soapenv):
             else:
                 soapenv = soapenv.plain()
             soapenv = soapenv.encode('utf-8')
-            plugins.message.sending(envelope=soapenv)
+            soapenv = plugins.message.sending(envelope=soapenv).envelope
             request = Request(location, soapenv)
             request.headers = self.headers()
             reply = transport.send(request)