--- a/firefox.rst	Thu Oct 29 14:01:23 2015 +0200
+++ b/firefox.rst	Fri Oct 30 11:29:07 2015 +0200
@@ -77,7 +77,9 @@
 
   general.useragent.override
 
-For Debian Icewasel just remove ``Icewasel`` from user agent string.
+For Debian Icewasel just remove ``Icewasel`` from user agent string. Example::
+
+  Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Firefox/44.0
 
 How to prevent links from opening a new window?
 ===============================================