Annoyingly, MAMP will override your favicons. This can be annoying when you really need to quickly identify tabs!

To stop this behavior find the following file:

“Applications/MAMP/conf/apache/httpd.conf”

And then comment out the following line:

#Alias /favicon.ico "/Applications/MAMP/bin/favicon.ico"

That’s it!

This works for the standard, free version of MAMP — which is what I use.

Hat tip to Tim Neil who first discovered this while using MAMP Pro.