diff --git a/UPGRADE-4.2.md b/UPGRADE-4.2.md
index 9a78f891a9..c066fc8b9f 100644
--- a/UPGRADE-4.2.md
+++ b/UPGRADE-4.2.md
@@ -175,7 +175,7 @@ Messenger
    After:
    ```php
    yield FirstMessage::class => ['priority' => 0];
-   yield SecondMessage::class => ['priority => -10];
+   yield SecondMessage::class => ['priority' => -10];
    ```
 
    Before: