diff --git a/cad/netgen/Makefile b/cad/netgen/Makefile
index c02bd4ffce4b..24080ba43a3d 100644
--- a/cad/netgen/Makefile
+++ b/cad/netgen/Makefile
@@ -4,7 +4,7 @@
 PORTNAME=	netgen
 PORTVERSION=	5.3.1
 CATEGORIES=	cad
-MASTER_SITES=	SF/netgen-mesher/netgen-mesher/${PORTVERSION:S|.0$||}/
+MASTER_SITES=	SF/netgen-mesher/netgen-mesher/${PORTVERSION:C|\.[[:digit:]]+$||}/
 
 MAINTAINER=	stephen@FreeBSD.org
 COMMENT=	Automatic 3D tetrahedral mesh generator