diff --git a/README.md b/README.md
index e6aae5e..3cd6796 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,12 @@
 [![Yunohost version](https://img.shields.io/badge/yunohost-2.5.6_tested-orange.svg?style=flat)](https://github.com/YunoHost/yunohost)
 [![GitHub issues](https://img.shields.io/github/issues/YunoHost-Apps/mastodon_ynh.svg?style=flat)](https://github.com/YunoHost-Apps/mastodon_ynh/issues)
 
+:warning: Cette application ne fonctionne que sur x86, x86_64 et non sur ARM (Raspberry,Olimex,Labriqueinternet,...). T_T
+
 :warning: Cette application utilise les packages backports de Debian, nous vous recommendons de ne pas installer cette application directement en production
 
+:warning: This app work only on x86, x86_64 and not on ARM (Raspberry,Olimex,InternetCube,...). T_T
+
 :warning: This application uses the Debian backports packages, do not install this application directly in production
 
 ## Mastodon c'est quoi ?
diff --git a/scripts/install b/scripts/install
index e747241..a4faed3 100644
--- a/scripts/install
+++ b/scripts/install
@@ -95,11 +95,10 @@ CLONECOMMANDS
 
 # Switch branch to tagged release
 cd $final_path/live
-url=$(curl -s https://api.github.com/repos/tootsuite/mastodon/releases/latest | sort -r | head -1 | cut -d\" -f4)
-version=$(echo $url | cut -d/ -f8)
+version=$(curl -s https://api.github.com/repos/tootsuite/mastodon/releases/latest | grep tag_name | cut -d\" -f4)
 sudo su - $app <<SWITCHCOMMANDS
 pushd ~/live
-git checkout $(git tag | tail -n 1)
+git checkout $version
 SWITCHCOMMANDS
 
 # Be king rewind (/var/cache/yunohost/from_file/scripts)
diff --git a/scripts/upgrade b/scripts/upgrade
index 5be8dbe..a741c4d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -50,11 +50,10 @@ PULLCOMMANDS
 
 # Switch branch to tagged release
 cd $final_path/live
-url=$(curl -s https://api.github.com/repos/tootsuite/mastodon/releases/latest | sort -r | head -1 | cut -d\" -f4)
-version=$(echo $url | cut -d/ -f8)
+version=$(curl -s https://api.github.com/repos/tootsuite/mastodon/releases/latest | grep tag_name | cut -d\" -f4)
 sudo su - $app <<SWITCHCOMMANDS
 pushd ~/live
-git checkout $(git tag | tail -n 1)
+git checkout $version
 SWITCHCOMMANDS
 
 # upgrade Node.js v4 to v6