diff --git a/python-gobject-missing-prototypes.patch b/python-gobject-missing-prototypes.patch
new file mode 100644
index 0000000..d92634b
--- /dev/null
+++ b/python-gobject-missing-prototypes.patch
@@ -0,0 +1,31 @@
+From d005df9645fd5fb2f19bd09384355f45591f1e58 Mon Sep 17 00:00:00 2001
+From: Christoph Reiter <creiter@src.gnome.org>
+Date: Mon, 23 Jan 2017 21:26:05 +0100
+Subject: Disable -Werror=missing-prototypes
+
+https://bugzilla.gnome.org/show_bug.cgi?id=760056
+added some code triggering "missing-prototype" which we by default
+treat as an error. This disables that specific error by default.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=777534
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index c8d95c7..8e225f4 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -228,7 +228,7 @@ AC_SUBST(INTROSPECTION_SCANNER)
+ AC_SUBST(INTROSPECTION_COMPILER)
+ 
+ # compiler warnings, errors, required cflags, and code coverage support
+-GNOME_COMPILE_WARNINGS([maximum])
++GNOME_COMPILE_WARNINGS([maximum], [-Wno-error=missing-prototypes])
+ AC_MSG_CHECKING(for Gnome code coverage support)
+ m4_ifdef([GNOME_CODE_COVERAGE],
+          [AC_MSG_RESULT(yes)
+-- 
+cgit v0.12
+
+
diff --git a/python-gobject.changes b/python-gobject.changes
index 8bfa7e4..cc23ca1 100644
--- a/python-gobject.changes
+++ b/python-gobject.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Feb 22 18:06:29 UTC 2017 - dimstar@opensuse.org
+
+- Add python-gobject-missing-prototypes.patch: Disable
+  -Werror=missing-prototypes (bgo#777534).
+- Add gnome-common BuildRequires and call autoreconf, as above
+  patch touches the build system.
+
 -------------------------------------------------------------------
 Mon Sep 19 14:58:45 UTC 2016 - dimstar@opensuse.org
 
diff --git a/python-gobject.spec b/python-gobject.spec
index a850a11..2bf2b99 100644
--- a/python-gobject.spec
+++ b/python-gobject.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-gobject
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -46,8 +46,11 @@ Url:            https://wiki.gnome.org/Projects/PyGObject/
 Source:         http://download.gnome.org/sources/pygobject/3.22/%{_name}-%{version}.tar.xz
 # PATCH-FIX-UPSTREAM pycompile-searchpath.patch jmatejek@suse.com -- Fix build with python 3.4
 Patch1:         pycompile-searchpath.patch
+# PATCH-FIX-UPSTREAM python-gobject-missing-prototypes.patch bgo#777534 dimstar@opensuse.org -- Disable -Werror=missing-prototypes, taken from git commit d005df
+Patch2:         python-gobject-missing-prototypes.patch
 BuildRequires:  fdupes
 BuildRequires:  glib2-devel >= 2.38.0
+BuildRequires:  gnome-common
 BuildRequires:  gobject-introspection-devel >= 1.46.0
 BuildRequires:  libffi-devel >= 3.0.0
 %if %{build_for_python3}
@@ -116,8 +119,10 @@ addon libraries such as pygtk.
 %prep
 %setup -q -n %{_name}-%{version}
 %patch1 -p1
+%patch2 -p1
 
 %build
+autoreconf -fiv
 %if %{build_for_python3}
 export PYTHON=python3
 %else
diff --git a/python3-gobject.changes b/python3-gobject.changes
index 8bfa7e4..cc23ca1 100644
--- a/python3-gobject.changes
+++ b/python3-gobject.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Feb 22 18:06:29 UTC 2017 - dimstar@opensuse.org
+
+- Add python-gobject-missing-prototypes.patch: Disable
+  -Werror=missing-prototypes (bgo#777534).
+- Add gnome-common BuildRequires and call autoreconf, as above
+  patch touches the build system.
+
 -------------------------------------------------------------------
 Mon Sep 19 14:58:45 UTC 2016 - dimstar@opensuse.org
 
diff --git a/python3-gobject.spec b/python3-gobject.spec
index d222932..dceb72b 100644
--- a/python3-gobject.spec
+++ b/python3-gobject.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python3-gobject
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -46,8 +46,11 @@ Url:            https://wiki.gnome.org/Projects/PyGObject/
 Source:         http://download.gnome.org/sources/pygobject/3.22/%{_name}-%{version}.tar.xz
 # PATCH-FIX-UPSTREAM pycompile-searchpath.patch jmatejek@suse.com -- Fix build with python 3.4
 Patch1:         pycompile-searchpath.patch
+# PATCH-FIX-UPSTREAM python-gobject-missing-prototypes.patch bgo#777534 dimstar@opensuse.org -- Disable -Werror=missing-prototypes, taken from git commit d005df
+Patch2:         python-gobject-missing-prototypes.patch
 BuildRequires:  fdupes
 BuildRequires:  glib2-devel >= 2.38.0
+BuildRequires:  gnome-common
 BuildRequires:  gobject-introspection-devel >= 1.46.0
 BuildRequires:  libffi-devel >= 3.0.0
 %if %{build_for_python3}
@@ -116,8 +119,10 @@ addon libraries such as pygtk.
 %prep
 %setup -q -n %{_name}-%{version}
 %patch1 -p1
+%patch2 -p1
 
 %build
+autoreconf -fiv
 %if %{build_for_python3}
 export PYTHON=python3
 %else