diff --git a/scripts/install b/scripts/install
index aa4b673..fa936b5 100755
--- a/scripts/install
+++ b/scripts/install
@@ -127,8 +127,7 @@ ynh_script_progression --message="Configuring SSOwat..." --weight=1
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
-	# unprotected_uris allows SSO credentials to be passed anyway.
-	ynh_app_setting_set $app unprotected_uris "/"
+	ynh_permission_update --permission "main" --add visitors
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 5099778..79f8661 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -130,7 +130,12 @@ ynh_script_progression --message="Configuring SSOwat..." --weight=1
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
-	ynh_app_setting_set $app unprotected_uris "/"
+	ynh_permission_update --permission "main" --add visitors
+fi
+
+unprotected_uris=$(ynh_app_setting_get --app=$app --key=unprotected_uris)
+if [ ! -z "$unprotected_uris" ]; then
+    ynh_app_setting_delete --app=$app --key=unprotected_uris
 fi
 
 #=================================================