--- a/firefox.rst	Mon Feb 03 11:54:28 2014 +0200
+++ b/firefox.rst	Tue Feb 04 09:07:07 2014 +0200
@@ -70,6 +70,15 @@
   Path=Profiles/xxxxxxx.default
   Default=1
 
+Change user agent.
+==================
+
+::
+
+  general.useragent.override
+
+For Debian Icewasel just remove ``Icewasel`` from user agent string.
+
 How to prevent links from opening a new window?
 ===============================================