diff --git a/cad/ngspice_rework/Makefile b/cad/ngspice_rework/Makefile
index 46b0010340f4..db10d9560a43 100644
--- a/cad/ngspice_rework/Makefile
+++ b/cad/ngspice_rework/Makefile
@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	ngspice_rework
-PORTVERSION=	30
-PORTREVISION=	1
+PORTVERSION=	31
 CATEGORIES=	cad
 MASTER_SITES=	SF/ngspice/ng-spice-rework/${PORTVERSION}
 DISTNAME=	ngspice-${PORTVERSION}
@@ -35,6 +34,7 @@ OPTIONS_DEFINE=	DEBUG
 CONFIGURE_ARGS+=	--with-ngshared
 PLIST_SUB+=		SHLIB="" X11="@comment "
 .else
+USES+=			xorg
 USE_XORG=		ice sm x11 xaw xext xmu xt
 CONFIGURE_ARGS+=	--with-x
 PLIST_SUB+=		SHLIB="@comment " X11=""
diff --git a/cad/ngspice_rework/distinfo b/cad/ngspice_rework/distinfo
index c54326b473e3..72bdb9d60037 100644
--- a/cad/ngspice_rework/distinfo
+++ b/cad/ngspice_rework/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1546576070
-SHA256 (ngspice-30.tar.gz) = 08fe0e2f3768059411328a33e736df441d7e6e7304f8dad0ed5f28e15d936097
-SIZE (ngspice-30.tar.gz) = 7147044
+TIMESTAMP = 1572299061
+SHA256 (ngspice-31.tar.gz) = 845f3b0c962e47ded051dfbc134c3c1e4ac925c9f0ce1cb3df64eb9b9da5c282
+SIZE (ngspice-31.tar.gz) = 7250057