diff --git a/gnome-system-monitor.spec b/gnome-system-monitor.spec
index f3ffefd..684711e 100644
--- a/gnome-system-monitor.spec
+++ b/gnome-system-monitor.spec
@@ -43,6 +43,7 @@ BuildRequires: autoconf, automake, libtool
 
 # send upstream: http://bugzilla.gnome.org/show_bug.cgi?id=491462
 Patch0: gnome-system-monitor-2.21.92-polkit.patch
+# http://bugzilla.gnome.org/show_bug.cgi?id=522988
 Patch1: gnome-system-monitor-2.21.92-system-tab-arg.patch
 
 Requires: PolicyKit-gnome >= %{polkit_gnome_version}