--- a/debian/ubuntu-settings.gsettings-override
+++ b/debian/ubuntu-settings.gsettings-override
@@ -166,6 +166,9 @@
 [org.gnome.settings-daemon.plugins.media-keys:Unity]
 screensaver = '<Control><Alt>l'
 
+[org.gnome.settings-daemon.plugins.background:Unity]
+active = true
+
 #############################################
 # communitheme specific session for testers #
 #############################################