diff --git a/net/tigervnc-viewer/Makefile b/net/tigervnc-viewer/Makefile
index cab00fdaccf9..2607569e3de6 100644
--- a/net/tigervnc-viewer/Makefile
+++ b/net/tigervnc-viewer/Makefile
@@ -1,37 +1,41 @@
 PKGNAMESUFFIX=	-viewer
+PORTREVISION=	1
 CATEGORIES=	net
 
 COMMENT=	TigerVNC Viewer
 WWW=		https://tigervnc.org/
 
 USES+=		gnome iconv jpeg magick:7,build xorg
 USE_XORG+=	ice pixman sm x11 xcursor xext xfixes xft xi xinerama xrender xrandr
 
 LIB_DEPENDS+=	libfontconfig.so:x11-fonts/fontconfig \
 		libfltk.so:x11-toolkits/fltk \
 		libnettle.so:security/nettle \
 	 	libgmp.so:math/gmp \
-		libavcodec.so:multimedia/ffmpeg
+		libavcodec.so:multimedia/ffmpeg \
+
+# TigerVNC only supports H.264 decoder
+CMAKE_ARGS+=	-DENABLE_H264:STRING=ON
 
 OPTIONS_DEFINE=	DOCS GNUTLS NLS
 OPTIONS_DEFAULT=	GNUTLS
 OPTIONS_SUB=	yes
 NLS_CMAKE_BOOL=	ENABLE_NLS
 NLS_USES=	gettext
 GNUTLS_CMAKE_BOOL=	ENABLE_GNUTLS
 GNUTLS_LIB_DEPENDS=	libgnutls.so:security/gnutls
 
 DESKTOP_ENTRIES=	"TigerVNC viewer" "Connect to VNC server and display remote desktop" \
 				"${PORTNAME}" "vncviewer" "Network;" false
 DESCR=		${.CURDIR}/pkg-descr
 
 post-patch:
 	# do not build server components and tests
 	@${REINPLACE_CMD} \
 		-e 's|add_subdirectory(unix)||' \
 		-e 's|add_subdirectory(tests)||' \
 		${WRKSRC}/CMakeLists.txt
 
 MASTERDIR=	${.CURDIR}/../tigervnc-server
 
 .include "${MASTERDIR}/Makefile.common.mk"