diff --git a/framework/core/src/Discussion/Discussion.php b/framework/core/src/Discussion/Discussion.php
index 7835ad4a0f..699e20f175 100644
--- a/framework/core/src/Discussion/Discussion.php
+++ b/framework/core/src/Discussion/Discussion.php
@@ -117,7 +117,7 @@ public static function boot()
     /**
      * Start a new discussion. Raises the DiscussionWasStarted event.
      */
-    public static function start(?string $title, User $user, self $model = null): static
+    public static function start(?string $title, User $user, self $model = null): self
     {
         $discussion = $model ?? new static;