diff --git a/devhelp.spec b/devhelp.spec
index 3c613cd..a06fdc6 100644
--- a/devhelp.spec
+++ b/devhelp.spec
@@ -12,6 +12,7 @@ Group: Development/Tools
 Summary: API document browser
 URL: http://developer.imendio.com/projects/devhelp
 Source: http://download.gnome.org/sources/devhelp/0.16/devhelp-%{version}.tar.bz2
+# http://bugzilla.gnome.org/show_bug.cgi?id=499050
 Patch:  devhelp-0.16.1-xulrunner.patch
 BuildRoot: %{_tmppath}/devhelp-%{version}-%{release}-root