diff --git a/scripts/install b/scripts/install
index 60bc7a2..71a8abb 100644
--- a/scripts/install
+++ b/scripts/install
@@ -72,7 +72,6 @@ ynh_script_progression --message="Storing installation settings..." --time --wei
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
-ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 ynh_app_setting_set --app=$app --key=language --value=$language
 ynh_app_setting_set --app=$app --key=display_mode --value=$display_mode
 
@@ -172,11 +171,12 @@ chown -R root: $final_path
 #=================================================
 ynh_script_progression --message="Configuring SSOwat..." --time --weight=1
 
+
+
 # Make app public if necessary
-if [ $is_public -eq 1 ]
+if [ "$is_public" -eq 1 ]
 then
-	# unprotected_uris allows SSO credentials to be passed anyway.
-	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
+	ynh_permission_update --permission="main" --add="visitors"
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index ab909e3..ce5d560 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -70,6 +70,16 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
+#=================================================
+# Migrate legacy permissions to new system
+#=================================================
+if ynh_legacy_permissions_exists
+then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
 #=================================================
 # CHECK THE PATH
 #=================================================