diff --git a/service_container/service_decoration.rst b/service_container/service_decoration.rst
index 2f0e71061bc..02985a576a8 100644
--- a/service_container/service_decoration.rst
+++ b/service_container/service_decoration.rst
@@ -225,17 +225,17 @@ the ``decoration_priority`` option. Its value is an integer that defaults to
         // config/services.php
         use Symfony\Component\DependencyInjection\Reference;
 
-        $container->register(Foo:class)
+        $container->register(Foo::class)
 
-        $container->register(Bar:class)
-            ->addArgument(new Reference(Bar:class.'.inner'))
+        $container->register(Bar::class)
+            ->addArgument(new Reference(Bar::class.'.inner'))
             ->setPublic(false)
-            ->setDecoratedService(Foo:class, null, 5);
+            ->setDecoratedService(Foo::class, null, 5);
 
-        $container->register(Baz:class)
-            ->addArgument(new Reference(Baz:class.'.inner'))
+        $container->register(Baz::class)
+            ->addArgument(new Reference(Baz::class.'.inner'))
             ->setPublic(false)
-            ->setDecoratedService(Foo:class, null, 1);
+            ->setDecoratedService(Foo::class, null, 1);
 
 The generated code will be the following::