diff --git a/validation/custom_constraint.rst b/validation/custom_constraint.rst
index c2b4eff130a..8fcb0c5c10e 100644
--- a/validation/custom_constraint.rst
+++ b/validation/custom_constraint.rst
@@ -499,7 +499,7 @@ A class constraint validator must be applied to the class itself:
 
         use App\Validator as AcmeAssert;
 
-        #[AcmeAssert\ProtocolClass]
+        #[AcmeAssert\ConfirmedPaymentReceipt]
         class AcmeEntity
         {
             // ...