diff --git a/lib/Alchemy/Phrasea/Model/Manipulator/WebhookEventManipulator.php b/lib/Alchemy/Phrasea/Model/Manipulator/WebhookEventManipulator.php
index 40e7f812a7..30d20d1045 100644
--- a/lib/Alchemy/Phrasea/Model/Manipulator/WebhookEventManipulator.php
+++ b/lib/Alchemy/Phrasea/Model/Manipulator/WebhookEventManipulator.php
@@ -12,7 +12,7 @@
 namespace Alchemy\Phrasea\Model\Manipulator;
 
 use Alchemy\Phrasea\Model\Entities\WebhookEvent;
-use Alchemy\Phrasea\Webhook\WebhookPublisher;
+use Alchemy\Phrasea\Webhook\WebhookPublisherInterface;
 use Doctrine\Common\Persistence\ObjectManager;
 use Doctrine\ORM\EntityRepository;
 
@@ -29,11 +29,11 @@ class WebhookEventManipulator implements ManipulatorInterface
     private $repository;
 
     /**
-     * @var WebhookPublisher
+     * @var WebhookPublisherInterface
      */
     private $publisher;
 
-    public function __construct(ObjectManager $om, EntityRepository $repo, WebhookPublisher $publisher)
+    public function __construct(ObjectManager $om, EntityRepository $repo, WebhookPublisherInterface $publisher)
     {
         $this->om = $om;
         $this->repository = $repo;
diff --git a/lib/Alchemy/Phrasea/Webhook/WebhookPublisher.php b/lib/Alchemy/Phrasea/Webhook/WebhookPublisher.php
index 4304a5319f..2beaec292f 100644
--- a/lib/Alchemy/Phrasea/Webhook/WebhookPublisher.php
+++ b/lib/Alchemy/Phrasea/Webhook/WebhookPublisher.php
@@ -19,7 +19,7 @@ use Alchemy\Queue\MessageQueueRegistry;
  * Class WebhookPublisher publishes webhook event notifications in message queues
  * @package Alchemy\Phrasea\Webhook
  */
-class WebhookPublisher 
+class WebhookPublisher implements WebhookPublisherInterface
 {
     /**
      * @var MessageQueueRegistry
diff --git a/lib/Alchemy/Phrasea/Webhook/WebhookPublisherInterface.php b/lib/Alchemy/Phrasea/Webhook/WebhookPublisherInterface.php
new file mode 100644
index 0000000000..f8b4751ef0
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Webhook/WebhookPublisherInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Alchemy\Phrasea\Webhook;
+
+use Alchemy\Phrasea\Model\Entities\WebhookEvent;
+
+interface WebhookPublisherInterface
+{
+    public function publishWebhookEvent(WebhookEvent $event);
+}