diff --git a/gnome-calculator-appdata_xml.patch b/gnome-calculator-appdata_xml.patch
new file mode 100644
index 0000000..96b6ee5
--- /dev/null
+++ b/gnome-calculator-appdata_xml.patch
@@ -0,0 +1,15 @@
+Index: gnome-calculator-3.10.2/data/gnome-calculator.appdata.xml
+===================================================================
+--- gnome-calculator-3.10.2.orig/data/gnome-calculator.appdata.xml
++++ gnome-calculator-3.10.2/data/gnome-calculator.appdata.xml
+@@ -28,7 +28,7 @@
+   </description>
+   <url type="homepage">https://wiki.gnome.org/Calculator</url>
+   <screenshots>
+-    <screenshot type="default">https://wiki.gnome.org/Calculator?action=AttachFile&do=get&target=gcalctool.png</screenshot>
++    <screenshot type="default">https://wiki.gnome.org/Calculator?action=AttachFile&amp;do=get&amp;target=gcalctool.png</screenshot>
+   </screenshots>
+ </application>
+-  
+\ No newline at end of file
++  
diff --git a/gnome-calculator.changes b/gnome-calculator.changes
index 2744060..0b60fba 100644
--- a/gnome-calculator.changes
+++ b/gnome-calculator.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Mar  5 13:54:18 UTC 2014 - coolo@suse.com
+
+- Add gnome-calculator-appdata_xml.patch: URI encode the links to
+  screenshots inside appdata.xml.
+
 -------------------------------------------------------------------
 Mon Nov 11 12:05:29 UTC 2013 - dimstar@opensuse.org
 
diff --git a/gnome-calculator.spec b/gnome-calculator.spec
index df85ad9..343eaed 100644
--- a/gnome-calculator.spec
+++ b/gnome-calculator.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package gnome-calculator
 #
-# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -24,6 +24,8 @@ License:        GPL-2.0+
 Group:          Productivity/Scientific/Math
 Url:            http://www.gnome.org
 Source:         http://download.gnome.org/sources/gnome-calculator/3.10/%{name}-%{version}.tar.xz
+# PATCH-FIX-UPSTREAM gnome-calculator-appdata_xml.patch coolo@suse.de -- fix invalid XML in appdata, not submitted upstream, as the screenshot links change for gnome-calculator 3.12 anyway.
+Patch0:         gnome-calculator-appdata_xml.patch
 BuildRequires:  fdupes
 BuildRequires:  intltool
 BuildRequires:  translation-update-upstream
@@ -47,6 +49,7 @@ A GNOME calculator package based on calctool and MP library.
 %lang_package
 %prep
 %setup -q
+%patch0 -p1
 translation-update-upstream
 
 %build