diff --git a/lib/PhpParser/BuilderFactory.php b/lib/PhpParser/BuilderFactory.php
index ab1c5a5..2f7b47b 100644
--- a/lib/PhpParser/BuilderFactory.php
+++ b/lib/PhpParser/BuilderFactory.php
@@ -12,14 +12,14 @@ use PhpParser\Builder;
  * @method Builder\Class_     class(string $name)     Creates a class builder.
  * @method Builder\Interface_ interface(string $name) Creates an interface builder.
  * @method Builder\Trait_     trait(string $name)     Creates a trait builder.
- * @method Builder\Function_  function(string $name)  Creates a function builder
+ * @method Builder\Function_  function(string $name)  Creates a function builder.
  */
 class BuilderFactory
 {
     /**
      * Creates a namespace builder.
      * 
-     * @param string $name Fully qualified namespace
+     * @param string|Node\Name $name Name of the namespace
      *
      * @return Builder\Namespace_ The created namespace builder
      */
diff --git a/test/PhpParser/Builder/ClassTest.php b/test/PhpParser/Builder/ClassTest.php
index f4c181f..731b731 100644
--- a/test/PhpParser/Builder/ClassTest.php
+++ b/test/PhpParser/Builder/ClassTest.php
@@ -156,6 +156,6 @@ DOC;
      */
     public function testInvalidName() {
         $this->createClassBuilder('Test')
-            ->extend(['Foo']);
+            ->extend(array('Foo'));
     }
 }