diff --git a/components/event_dispatcher.rst b/components/event_dispatcher.rst
index 0344acf4e8e..ef0392e6dfc 100644
--- a/components/event_dispatcher.rst
+++ b/components/event_dispatcher.rst
@@ -313,7 +313,7 @@ order. Start by creating this custom event class and documenting it::
             $this->order = $order;
         }
 
-        public function getOrder()
+        public function getOrder(): Order
         {
             return $this->order;
         }