diff --git a/lib/public/Activity/IManager.php b/lib/public/Activity/IManager.php
index 2fe38ddb8d..f5b495807c 100644
--- a/lib/public/Activity/IManager.php
+++ b/lib/public/Activity/IManager.php
@@ -64,6 +64,7 @@ interface IManager {
 	 *  - setSubject()
 	 *
 	 * @param IEvent $event
+	 * @throws \BadMethodCallException if required values have not been set
 	 * @since 8.2.0
 	 */
 	public function publish(IEvent $event);