diff --git a/graphics/pdfpc/Makefile b/graphics/pdfpc/Makefile
index f07097d2b86c..4fa79dc80003 100644
--- a/graphics/pdfpc/Makefile
+++ b/graphics/pdfpc/Makefile
@@ -1,31 +1,36 @@
 PORTNAME=	pdfpc
 DISTVERSION=	4.6.0
 CATEGORIES=	graphics
 DISTVERSIONPREFIX=	v
 PORTREVISION=	3
 
 MAINTAINER=	bapt@FreeBSD.org
 COMMENT=	Keynote-like multi-monitor presentation viewer
 WWW=		https://pdfpc.github.io/
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 BUILD_DEPENDS=	${LOCALBASE}/lib/libmarkdown.a:textproc/discount
 LIB_DEPENDS=	libgee-0.8.so:devel/libgee \
+		libharfbuzz.so:print/harfbuzz \
+		libjson-glib-1.0.so:devel/json-glib \
+		libmarkdown.so:textproc/discount \
 		libpoppler-glib.so:graphics/poppler-glib \
-		libwebkit2gtk-4.0.so:www/webkit2-gtk3 \
-		libqrencode.so:graphics/libqrencode
+		libqrencode.so:graphics/libqrencode \
+		libsoup-2.4.so:devel/libsoup \
+		libwebkit2gtk-4.0.so:www/webkit2-gtk3
 
-USE_GITHUB=	yes
+USES=		cmake compiler:c11 gnome gstreamer pkgconfig vala:build xorg
+USE_GNOME=	cairo gdkpixbuf2 gtk30
+USE_XORG=	x11
 
-USES=		cmake compiler:c11 gnome gstreamer pkgconfig vala:build
-USE_GNOME=	gtk30
+USE_GITHUB=	yes
 
 CMAKE_ARGS=	-DMANDIR:STRING="man/"
 
 post-install:
 	@${MV} ${STAGEDIR}${PREFIX}/etc/pdfpcrc \
 		${STAGEDIR}${PREFIX}/etc/pdfpcrc.sample
 
 .include <bsd.port.mk>
diff --git a/graphics/pdfpc/files/patch-src_classes_drawings_drawing__commands.vala b/graphics/pdfpc/files/patch-src_classes_drawings_drawing__commands.vala
new file mode 100644
index 000000000000..5453aafedfce
--- /dev/null
+++ b/graphics/pdfpc/files/patch-src_classes_drawings_drawing__commands.vala
@@ -0,0 +1,27 @@
+--- src/classes/drawings/drawing_commands.vala.orig	2023-08-08 00:11:53 UTC
++++ src/classes/drawings/drawing_commands.vala
+@@ -54,8 +54,8 @@ namespace pdfpc {
+         }
+ 
+         public void clear() {
+-            this.drawing_commands = new List<DrawingCommand>();
+-            this.redo_commands = new List<DrawingCommand>();
++            this.drawing_commands = new List<DrawingCommand?>();
++            this.redo_commands = new List<DrawingCommand?>();
+         }
+ 
+         public void add_line(bool is_eraser,
+@@ -70,7 +70,7 @@ namespace pdfpc {
+ 
+             // After adding a new line you can no longer redo the old
+             // path.
+-            this.redo_commands = new List<DrawingCommand>(); // clear
++            this.redo_commands = new List<DrawingCommand?>(); // clear
+ 
+             bool new_path = true;
+             double epsilon = 1e-4; // Less than 0.1 pixel for a 1000x1000 img
+@@ -171,4 +171,3 @@ namespace pdfpc {
+         }
+     }
+ }
+-