diff --git a/rdpy/protocol/rdp/nla/cssp.py b/rdpy/protocol/rdp/nla/cssp.py
index 43f36c9..61ea226 100644
--- a/rdpy/protocol/rdp/nla/cssp.py
+++ b/rdpy/protocol/rdp/nla/cssp.py
@@ -97,7 +97,7 @@ class TSSmartCardCreds(univ.Sequence):
         namedtype.OptionalNamedType('domainHint', univ.OctetString().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 3)))
         )
 
-def createBERRequest(negoTypes):
+def createDERRequest(negoTypes):
     """
     @summary: create TSRequest from list of Type
     @param negoTypes: {list(Type)}
diff --git a/rdpy/protocol/rdp/tpkt.py b/rdpy/protocol/rdp/tpkt.py
index 55a3c61..1b161d6 100644
--- a/rdpy/protocol/rdp/tpkt.py
+++ b/rdpy/protocol/rdp/tpkt.py
@@ -223,9 +223,8 @@ class TPKT(RawLayer, IFastPathSender):
         @summary: use to start NLA (NTLM over SSL) protocol
                     must be called after startTLS function
         """
-        #send first NTLM packet
-        self.transport.write(cssp.createBERRequest( [ ntlm.NegotiateMessage() ] ))
-        
+        #send NTLM negotiate message packet
+        self.transport.write(cssp.createDERRequest( [ ntlm.NegotiateMessage() ] ))
         
         
     def readNTLMChallenge(self, data):