diff --git a/autobahn/websocket/compress_deflate.py b/autobahn/websocket/compress_deflate.py
index cb425c23..2886af6a 100644
--- a/autobahn/websocket/compress_deflate.py
+++ b/autobahn/websocket/compress_deflate.py
@@ -576,8 +576,8 @@ class PerMessageDeflate(PerMessageCompress, PerMessageDeflateMixin):
         pmce = cls(is_server,
                    accept.no_context_takeover if accept.no_context_takeover is not None else accept.offer.request_no_context_takeover,
                    accept.request_no_context_takeover,
-                   accept.window_bits if accept.window_bits is not None else accept.offer.requestMaxWindowBits,
-                   accept.requestMaxWindowBits,
+                   accept.window_bits if accept.window_bits is not None else accept.offer.request_max_window_bits,
+                   accept.request_max_window_bits,
                    accept.mem_level)
         return pmce
 
diff --git a/examples/twisted/websocket/echo_compressed/client_advanced.py b/examples/twisted/websocket/echo_compressed/client_advanced.py
index fa42c959..921df5bf 100644
--- a/examples/twisted/websocket/echo_compressed/client_advanced.py
+++ b/examples/twisted/websocket/echo_compressed/client_advanced.py
@@ -75,7 +75,7 @@ if __name__ == '__main__':
     offers1 = [PerMessageDeflateOffer(acceptNoContextTakeover=True,
                                       acceptMaxWindowBits=True,
                                       requestNoContextTakeover=False,
-                                      requestMaxWindowBits=0)]
+                                      request_max_window_bits=0)]
 
     # request the server to use a sliding window of 2^8 bytes
     offers2 = [PerMessageDeflateOffer(True, True, False, 8)]
diff --git a/examples/twisted/websocket/echo_compressed/server_advanced.py b/examples/twisted/websocket/echo_compressed/server_advanced.py
index 30b06e9b..c4f9b9b4 100644
--- a/examples/twisted/websocket/echo_compressed/server_advanced.py
+++ b/examples/twisted/websocket/echo_compressed/server_advanced.py
@@ -101,7 +101,7 @@ if __name__ == '__main__':
         for offer in offers:
             if isinstance(offer, PerMessageDeflateOffer):
                 if offer.acceptMaxWindowBits:
-                    return PerMessageDeflateOfferAccept(offer, requestMaxWindowBits=8)
+                    return PerMessageDeflateOfferAccept(offer, request_max_window_bits=8)
 
 
 #   factory.setProtocolOptions(perMessageCompressionAccept = accept0)