--- gnome-shell-3.1.91/data/org.gnome.shell.gschema.xml.in.in.firefox	2011-09-07 19:50:20.167547963 +0300
+++ gnome-shell-3.1.91/data/org.gnome.shell.gschema.xml.in.in	2011-09-07 19:51:32.067106738 +0300
@@ -31,7 +31,7 @@
       </_description>
     </key>
     <key name="favorite-apps" type="as">
-      <default>[ 'epiphany.desktop', 'evolution.desktop', 'empathy.desktop', 'rhythmbox.desktop', 'shotwell.desktop', 'libreoffice-writer.desktop', 'org.gnome.Nautilus.desktop', 'org.gnome.Documents.desktop' ]</default>
+      <default>[ 'firefox.desktop', 'evolution.desktop', 'empathy.desktop', 'rhythmbox.desktop', 'shotwell.desktop', 'libreoffice-writer.desktop', 'org.gnome.Nautilus.desktop', 'org.gnome.Documents.desktop' ]</default>
       <_summary>List of desktop file IDs for favorite applications</_summary>
       <_description>
         The applications corresponding to these identifiers
--- a/js/ui/appFavorites.js
+++ b/js/ui/appFavorites.js
@@ -22,6 +22,7 @@ const RENAMED_DESKTOP_IDS = {
     'gnome-software.desktop': 'org.gnome.Software.desktop',
     'gnome-weather.desktop': 'org.gnome.Weather.Application.desktop',
     'gnomine.desktop': 'gnome-mines.desktop',
+    'mozilla-firefox.desktop': 'firefox.desktop',
     'nautilus.desktop': 'org.gnome.Nautilus.desktop',
     'polari.desktop': 'org.gnome.Polari.desktop',
 };