diff --git a/games/doomsday/Makefile b/games/doomsday/Makefile
index 7b6496e49bcb..77257cbacebe 100644
--- a/games/doomsday/Makefile
+++ b/games/doomsday/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	doomsday
 PORTVERSION=	1.15.8
+PORTREVISION=	1
 CATEGORIES=	games
 MASTER_SITES=	SF/deng/Doomsday%20Engine/${PORTVERSION}
 DISTNAME=	${PORTNAME}-stable-${PORTVERSION}
diff --git a/games/doomsday/files/patch-doomsday_libgui_src_displaymode__x11.cpp b/games/doomsday/files/patch-doomsday_libgui_src_displaymode__x11.cpp
new file mode 100644
index 000000000000..871104c7e12a
--- /dev/null
+++ b/games/doomsday/files/patch-doomsday_libgui_src_displaymode__x11.cpp
@@ -0,0 +1,16 @@
+--- doomsday/libgui/src/displaymode_x11.cpp.orig	2016-02-01 03:37:12 UTC
++++ doomsday/libgui/src/displaymode_x11.cpp
+@@ -54,8 +54,12 @@ public:
+     /**
+      * Queries all the available modes in the display configuration.
+      */
+-    RRInfo() : _numSizes(0)
++    RRInfo() : _conf(NULL), _numSizes(0)
+     {
++        int dummy;
++        if (!XRRQueryExtension(QX11Info::display(), &dummy, &dummy))
++            return; // Not available.
++
+         _conf = XRRGetScreenInfo(QX11Info::display(), QX11Info::appRootWindow());
+         if(!_conf) return; // Not available.
+