diff --git a/src/Faker/Provider/Base.php b/src/Faker/Provider/Base.php
index 679dc479..ce7c6373 100644
--- a/src/Faker/Provider/Base.php
+++ b/src/Faker/Provider/Base.php
@@ -2,11 +2,19 @@
 
 namespace Faker\Provider;
 
+use Faker\Generator;
+
 class Base
 {
+    /**
+     * @var \Faker\Generator
+     */
     protected $generator;
 
-    public function __construct($generator)
+    /**
+     * @param \Faker\Generator $generator
+     */
+    public function __construct(Generator $generator)
     {
         $this->generator = $generator;
     }