diff --git a/libraries/classes/Controllers/Table/StructureController.php b/libraries/classes/Controllers/Table/StructureController.php
index 8971e2b74ea0..7f59013170d4 100644
--- a/libraries/classes/Controllers/Table/StructureController.php
+++ b/libraries/classes/Controllers/Table/StructureController.php
@@ -291,7 +291,8 @@ public function indexAction(ContainerBuilder $containerBuilder): void
                 }
             } else {
                 $this->response->setRequestStatus(false);
-                $this->response->addJSON('message', __('No column selected.'));
+                $message = Message::error(__('No column selected.'));
+                $this->response->addJSON('message', $message);
             }
         }