diff -ruN /usr/ports/net/mldonkey/Makefile mldonkey/Makefile
--- /usr/ports/net/mldonkey/Makefile	Tue Oct 26 07:50:22 2004
+++ mldonkey/Makefile	Thu Dec 30 15:25:20 2004
@@ -23,6 +23,8 @@
 
 DOWNLOADVERSION=2.5.22
 
+CONFLICTS=	mldonkey-devel-[0-9]* mldonkey-{core,gui}-devel-[0.9]*
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-pthread --enable-ocamlver=3
 WRKSRC=		${WRKDIR}/${PORTNAME}-${DOWNLOADVERSION}