diff --git a/scripts/install b/scripts/install
index 0c90aeb..1b303a0 100755
--- a/scripts/install
+++ b/scripts/install
@@ -171,9 +171,7 @@ if [ $is_public -eq 0 ]; then
 	ynh_permission_update --permission "main" --remove "visitors" --add "all_users"
 fi
 
-ynh_permission_create --permission "admin"
-
-ynh_permission_update --permission "admin" --add $admin
+ynh_permission_create --permission "admin" --url "/admin" --allowed $admin
 
 #=================================================
 # RELOAD NGINX
diff --git a/scripts/upgrade b/scripts/upgrade
index 6b3ea9a..27fb5c7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -201,9 +201,9 @@ chown -R $app: $final_path
 # SETUP SSOWAT
 #=================================================
 
-if ynh_exec_warn_less ynh_permission_create --permission "admin"; then
+if ! ynh_permission_exists --permission "admin"; then
 	ynh_print_info "Upgrading SSOwat configuration..."
-	ynh_permission_update --permission "admin" --add $admin
+	ynh_permission_create --permission "admin" --url "/admin" --allowed $admin
 fi
 
 #=================================================