diff --git a/0001-Skip-marshalling-NULL-output-arguments-in-Python-clo.patch b/0001-Skip-marshalling-NULL-output-arguments-in-Python-clo.patch
new file mode 100644
index 0000000..fe8a7d6
--- /dev/null
+++ b/0001-Skip-marshalling-NULL-output-arguments-in-Python-clo.patch
@@ -0,0 +1,30 @@
+From 92f0d6ebf9b67729d8253e15fce77b0ad0375573 Mon Sep 17 00:00:00 2001
+From: Simon Feltman <sfeltman@src.gnome.org>
+Date: Wed, 20 Aug 2014 13:39:31 -0700
+Subject: [PATCH] Skip marshalling NULL output arguments in Python closures
+
+Skip marshalling optional output arguments which are passed NULL
+as the memory location. This fixes fallout from bug 727004.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=735090
+---
+ gi/pygi-closure.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/gi/pygi-closure.c b/gi/pygi-closure.c
+index 15c6767..599503f 100644
+--- a/gi/pygi-closure.c
++++ b/gi/pygi-closure.c
+@@ -371,7 +371,8 @@ _pygi_closure_convert_arguments (PyGIInvokeState *state,
+     for (i = 0; i < _pygi_callable_cache_args_len (cache); i++) {
+         PyGIArgCache *arg_cache = g_ptr_array_index (cache->args_cache, i);
+ 
+-        if (arg_cache->direction & PYGI_DIRECTION_FROM_PYTHON) {
++        if (arg_cache->direction & PYGI_DIRECTION_FROM_PYTHON &&
++                state->arg_values[i].v_pointer) {
+             state->arg_pointers[i].v_pointer = state->arg_values[i].v_pointer;
+             state->arg_values[i] = *(GIArgument *) state->arg_values[i].v_pointer;
+         }
+-- 
+2.1.0
+
diff --git a/pygobject3.spec b/pygobject3.spec
index 513a168..8f4407f 100644
--- a/pygobject3.spec
+++ b/pygobject3.spec
@@ -22,7 +22,7 @@
 
 Name: pygobject3
 Version: 3.13.90
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: LGPLv2+ and MIT
 Group: Development/Languages
 Summary: Python 2 bindings for GObject Introspection
@@ -30,6 +30,9 @@ URL: https://live.gnome.org/PyGObject
 #VCS: git:git://git.gnome.org/pygobject
 Source: http://ftp.gnome.org/pub/GNOME/sources/pygobject/3.13/pygobject-%{version}.tar.xz
 
+# Backported upstream patch
+Patch0: 0001-Skip-marshalling-NULL-output-arguments-in-Python-clo.patch
+
 BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: gobject-introspection-devel >= %{gobject_introspection_version}
 BuildRequires: python2-devel >= %{python2_version}
@@ -106,6 +109,7 @@ for use in Python 3 programs.
 
 %prep
 %setup -q -n pygobject-%{version}
+%patch0 -p1
 
 %if 0%{?with_python3}
 rm -rf %{py3dir}
@@ -211,6 +215,9 @@ xvfb-run make DESTDIR=$RPM_BUILD_ROOT check %{verbosity}
 %endif # with_python3
 
 %changelog
+* Thu Aug 21 2014 Kalev Lember <kalevlember@gmail.com> - 3.13.90-2
+- Backport a fix for virt-manager crash (#1130758)
+
 * Tue Aug 19 2014 Kalev Lember <kalevlember@gmail.com> - 3.13.90-1
 - Update to 3.13.90