Index: src/multiplay.c
===================================================================
--- src/multiplay.c	(revision 1021)
+++ src/multiplay.c	(working copy)
@@ -1340,7 +1340,7 @@
 	strcpy(msg,NetPlay.players[i].name);
 	strcat(msg," : ");								// seperator
 	//strcat(msg, &(pMsg->body[4]));					// add message
-	strncat(msg, &(pMsg->body[4]), MAX_CONSOLE_STRING_LENGTH);					// add message
+	strncat(msg, &(pMsg->body[4]), MAX_CONSOLE_STRING_LENGTH-strlen(msg)-1);// add message
 	addConsoleMessage((char *)&msg,DEFAULT_JUSTIFY);
 
 	//multiplayer message callback