diff --git a/urjtag-gcc10.patch b/urjtag-gcc10.patch
new file mode 100644
index 0000000..c9046e6
--- /dev/null
+++ b/urjtag-gcc10.patch
@@ -0,0 +1,25 @@
+From c6a6b7730e61e00fbaa461e07cee456aff0a6d2b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
+Date: Thu, 13 Feb 2020 16:36:44 +0100
+Subject: [PATCH] fix UrjtagError declaration
+
+---
+ urjtag/bindings/python/py_urjtag.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/urjtag/bindings/python/py_urjtag.h b/urjtag/bindings/python/py_urjtag.h
+index 38582ebb..16b120d8 100644
+--- a/urjtag/bindings/python/py_urjtag.h
++++ b/urjtag/bindings/python/py_urjtag.h
+@@ -35,7 +35,7 @@ struct urj_pyregister
+ extern PyTypeObject urj_pyregister_Type;
+ 
+ extern PyObject *urj_py_chkret (int rc);
+-PyObject *UrjtagError;
++extern PyObject *UrjtagError;
+ 
+ extern int urj_pyc_precheck (urj_chain_t *urc, int checks_needed);
+ #define UPRC_CBL 1
+-- 
+2.21.1
+
diff --git a/urjtag.spec b/urjtag.spec
index d40b637..fbef6a7 100644
--- a/urjtag.spec
+++ b/urjtag.spec
@@ -6,13 +6,14 @@
 
 Name:           urjtag
 Version:        2019.12
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        A tool for communicating over JTAG with flash chips and CPUs
 
 License:        GPLv2+
 URL:            http://urjtag.org
 Source0:        https://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.xz
 Patch0:         %{name}-fixarm.patch
+Patch1:         %{name}-gcc10.patch
 
 %global py3_prefix python3
 
@@ -55,6 +56,7 @@ Python bindings and examples for %{name}.
 %prep
 %setup -q
 %patch0 -p2 -b .armfix
+%patch1 -p2 -b .gcc10
 
 %build
 %configure --enable-jedec-exp --enable-stapl --enable-bsdl --enable-svf --disable-static --enable-shared
@@ -100,6 +102,9 @@ pushd bindings/python/
 %doc bindings/python/t_srst.py
 
 %changelog
+* Thu Feb 13 2020 Dan Horák <dan[at]danny.cz> - 2019.12-3
+- fix FTBFS with gcc10 (#1793499)
+
 * Fri Jan 31 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2019.12-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild