diff --git a/app_ffsync.md b/app_ffsync.md
index af0f616a..eba9979f 100644
--- a/app_ffsync.md
+++ b/app_ffsync.md
@@ -5,11 +5,11 @@ Firefox Sync permits synchronize plugins, tabs, bookmarks, favorites, history ov
 #### Firefox desktop
 In Firefox URL bar put: `about:config`.
 
-Search for: `services.sync.tokenServerURI`.
+Search for: `identity.sync.tokenserver.uri`.
 
 Replace the URL by: https://mydomain.tld/path/token/1.0/sync/1.5
 
 Create an account at Mozilla: https://accounts.firefox.com/signup
 
 #### Firefox mobile
-Install the plugin `fxa-custom-server-addon`.
\ No newline at end of file
+With the last version of firefox mobile it's same than for desktop.