diff --git a/0001-make-constructors-of-abstract-classes-protected.patch b/0001-make-constructors-of-abstract-classes-protected.patch
new file mode 100644
index 0000000..2a969a7
--- /dev/null
+++ b/0001-make-constructors-of-abstract-classes-protected.patch
@@ -0,0 +1,79 @@
+From f10e917b252a809daf9f7650011f68edc6be81b0 Mon Sep 17 00:00:00 2001
+From: Evgeny Stambulchik <fnevgeny@gmail.com>
+Date: Sun, 4 Aug 2019 00:50:34 +0300
+Subject: [PATCH] Make constructors of abstract classes protected
+
+This should fix #445.
+---
+ src/classes/action/action_mapping.vala | 2 +-
+ src/classes/drawings/storage.vala      | 2 +-
+ src/classes/renderer/cache/base.vala   | 2 +-
+ src/classes/timer_label.vala           | 2 +-
+ src/classes/view/behaviour/base.vala   | 2 +-
+ 5 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/src/classes/action/action_mapping.vala b/src/classes/action/action_mapping.vala
+index 780f80a..0abc307 100644
+--- a/src/classes/action/action_mapping.vala
++++ b/src/classes/action/action_mapping.vala
+@@ -48,7 +48,7 @@ namespace pdfpc {
+          * methods, and we need blank objects to call them.  Thus, this blank
+          * constructor.
+          */
+-        public ActionMapping() {
++        protected ActionMapping() {
+             base();
+         }
+ 
+diff --git a/src/classes/drawings/storage.vala b/src/classes/drawings/storage.vala
+index 6c6e7f9..e5ceaa9 100644
+--- a/src/classes/drawings/storage.vala
++++ b/src/classes/drawings/storage.vala
+@@ -35,7 +35,7 @@ namespace pdfpc.Drawings.Storage {
+          */
+         protected Metadata.Pdf metadata;
+ 
+-        public Base(Metadata.Pdf metadata) {
++        protected Base(Metadata.Pdf metadata) {
+             this.metadata = metadata;
+         }
+ 
+diff --git a/src/classes/renderer/cache/base.vala b/src/classes/renderer/cache/base.vala
+index d60730e..2dc39ac 100644
+--- a/src/classes/renderer/cache/base.vala
++++ b/src/classes/renderer/cache/base.vala
+@@ -37,7 +37,7 @@ namespace pdfpc.Renderer.Cache {
+         /**
+          * Initialize the cache store
+          */
+-        public Base(Metadata.Pdf metadata) {
++        protected Base(Metadata.Pdf metadata) {
+             this.metadata = metadata;
+         }
+ 
+diff --git a/src/classes/timer_label.vala b/src/classes/timer_label.vala
+index 8b55acc..8d689e1 100644
+--- a/src/classes/timer_label.vala
++++ b/src/classes/timer_label.vala
+@@ -95,7 +95,7 @@ namespace pdfpc {
+          * Default constructor taking the initial time as argument, as well as
+          * the time to countdown until the talk actually starts.
+          */
+-        public TimerLabel(PresentationController controller, time_t start_time = 0) {
++        protected TimerLabel(PresentationController controller, time_t start_time = 0) {
+             this.controller = controller;
+             this.start_time = start_time;
+         }
+diff --git a/src/classes/view/behaviour/base.vala b/src/classes/view/behaviour/base.vala
+index 4382ba6..46c8808 100644
+--- a/src/classes/view/behaviour/base.vala
++++ b/src/classes/view/behaviour/base.vala
+@@ -41,7 +41,7 @@ namespace pdfpc.View {
+         /**
+          * Base constructor not taking any arguments
+          */
+-        public Base() {
++        protected Base() {
+             // Nothing to do here
+         }
+ 
diff --git a/pdfpc.spec b/pdfpc.spec
index f3d4237..02f1f41 100644
--- a/pdfpc.spec
+++ b/pdfpc.spec
@@ -1,14 +1,16 @@
 Name:           pdfpc
 Version:        4.3.4
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A GTK based presentation viewer application for GNU/Linux
 
 License:        GPLv2+
 URL:            https://%{name}.github.io/
 Source0:        https://github.com/%{name}/%{name}/archive/v%{version}.tar.gz
+Patch0:         0001-make-constructors-of-abstract-classes-protected.patch
 
 BuildRequires:  cmake
 BuildRequires:  gcc
+BuildRequires:  git-core
 BuildRequires:  gtk3-devel
 BuildRequires:  gstreamer1-devel
 BuildRequires:  gstreamer1-plugins-base-devel
@@ -29,7 +31,7 @@ documents, which can be created using nearly any of today's presentation
 software.
 
 %prep
-%autosetup -n %{name}-%{version}
+%autosetup -n %{name}-%{version} -S git
 
 
 %build
@@ -52,6 +54,11 @@ make %{?_smp_mflags}
 
 
 %changelog
+* Sun Aug 04 2019 Ankur Sinha <ankursinha AT fedoraproject DOT org> - 4.3.4-3
+- Add patch to fix FTBFS
+- https://bugzilla.redhat.com/show_bug.cgi?id=1736412
+- https://github.com/pdfpc/pdfpc/pull/446
+
 * Fri Jul 26 2019 Fedora Release Engineering <releng@fedoraproject.org> - 4.3.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild