diff --git a/docs/advanced-usage/creating-a-cast.md b/docs/advanced-usage/creating-a-cast.md
index 2ace0dbe..f2cfd090 100644
--- a/docs/advanced-usage/creating-a-cast.md
+++ b/docs/advanced-usage/creating-a-cast.md
@@ -68,7 +68,7 @@ class Email implements Castable
   {
     return new class implements Cast {
         public function cast(DataProperty $property, mixed $value, array $context): mixed {
-            return new self($value);
+            return new Email($value);
         }
     };
   }