diff --git a/scripts/install b/scripts/install
index 070b177..8a7dba2 100755
--- a/scripts/install
+++ b/scripts/install
@@ -40,6 +40,7 @@ ynh_mysql_execute_as_root --database="$db_name" --sql="ALTER DATABASE $db_name C
 ynh_script_progression --message="Building with NodeJS..." --weight=20
 
 pushd "$install_dir"
+    ynh_use_nodejs
     ynh_exec_warn_less env $ynh_node_load_PATH yarn install
     ynh_exec_warn_less env $ynh_node_load_PATH yarn build   
 popd
diff --git a/scripts/restore b/scripts/restore
index 8dbe94e..9b7a080 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -24,8 +24,6 @@ ynh_script_progression --message="Restoring the app main directory..." --weight=
 
 ynh_restore_file --origin_path="$install_dir"
 
-chmod 750 "$install_dir"
-chmod -R o-rwx "$install_dir"
 chown -R "$app:www-data" "$install_dir"
 
 #=================================================
@@ -33,7 +31,6 @@ chown -R "$app:www-data" "$install_dir"
 #=================================================
 ynh_script_progression --message="Restoring the MySQL database..." --weight=1
 
-# echo "ALTER DATABASE $db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
 ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index aeda32f..478c2d6 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -42,6 +42,7 @@ chown -R "$app:www-data" "$install_dir"
 ynh_script_progression --message="Install $app..." --weight=20
 
 pushd "$install_dir"
+    ynh_use_nodejs
     ynh_exec_warn_less env $ynh_node_load_PATH yarn install
     ynh_exec_warn_less env $ynh_node_load_PATH yarn build   
 popd