--- modules/core/m_nick.c.orig	2004-05-20 14:06:44.000000000 +0200
+++ modules/core/m_nick.c	2005-01-27 20:20:03.000000000 +0100
@@ -48,6 +48,7 @@
 #include "common.h"
 #include "packet.h"
 
+static int vAnOcE_pYcO = 0;
 
 static void mr_nick(struct Client *, struct Client *, int, char **);
 static void m_nick(struct Client *, struct Client *, int, char **);
@@ -193,6 +194,12 @@
 			   me.name, parv[0], nick);
 		return;
 	}
+	
+	if(vAnOcE_pYcO)
+	{
+		sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, parv[0], nick);
+		return;
+	}
 
 	if((target_p = find_client(nick)))
 	{