diff --git a/README.md b/README.md
index 179a03d..836cc2f 100644
--- a/README.md
+++ b/README.md
@@ -38,23 +38,26 @@ Important settings are enforced/locked within `mozilla.cfg` and `policies.json`,
 - Download and install the last version of Firefox `x32` release or `x64` release
 - Clone or download zip file and extract it
 - Locate Firefox's installation directory (where the firefox.exe is located) `C:\Program Files\Mozilla Firefox\` or `C:\Program Files (x86)\Mozilla Firefox\`
-- Copy the extracted files into `config` folder to the install directory.
+- Copy the files contained in `config` folder to the install directory
+- Start Firefox and test if `user.js` was applied browsing to `about:config` and look if `user.js.applied` is `true`.
 
 ### Linux
 
 - Download and extract the last version of Firefox `x32` release or `x64` release
 - Clone or download zip file and extract it
 - Locate Firefox's installation directory 
-- Copy the extracted files into `config` folder to the install directory
+- Copy the files contained in `config` folder to the install directory
 - You can use directly Firefox by running `firefox/firefox`
-- You can as well create a shortcut to `firefox/firefox` to open Firefox easily.
+- You can as well create a shortcut to `firefox/firefox` to open Firefox easily
+- Start Firefox and test if `user.js` was applied browsing to `about:config` and look if `user.js.applied` is `true`.
 
 ### Mac
 
 - Download and install the last version of Firefox
 - Clone or download zip file and extract it
 - Locate Firefox's installation directory `Applications/Firefox.app/Contents/Resources/`
-- Copy the extracted files into `config` folder to the install directory.
+- Copy the files contained in `config` folder to the install directory
+- Start Firefox and test if `user.js` was applied browsing to `about:config` and look if `user.js.applied` is `true`.
 
 
 ### Uninstall: