diff --git a/IdIOHandlerWebsocket.pas b/IdIOHandlerWebsocket.pas
index fad956f..ee38c60 100644
--- a/IdIOHandlerWebsocket.pas
+++ b/IdIOHandlerWebsocket.pas
@@ -1,6 +1,6 @@
 unit IdIOHandlerWebsocket;
 
-{$DEFINE DEBUG_WS}
+{.$DEFINE DEBUG_WS}
 
 //The WebSocket Protocol, RFC 6455
 //http://datatracker.ietf.org/doc/rfc6455/?include_text=1