diff --git a/doc/recipes.rst b/doc/recipes.rst
index 9523fff9b..ddc697569 100644
--- a/doc/recipes.rst
+++ b/doc/recipes.rst
@@ -30,7 +30,7 @@ catches deprecation notices, and return them.
 .. tip::
 
     If your templates are not stored on the filesystem, use the ``collect()``
-    method instead which takes an ``Iterator``; the iterator must return
+    method instead. ``collect()`` takes a ``Traversable`` which must return
     template names as keys and template contents as values (as done by
     ``Twig_Util_TemplateDirIterator``).
 
diff --git a/lib/Twig/Util/DeprecationCollector.php b/lib/Twig/Util/DeprecationCollector.php
index f8e1adba5..884cf055f 100644
--- a/lib/Twig/Util/DeprecationCollector.php
+++ b/lib/Twig/Util/DeprecationCollector.php
@@ -46,11 +46,11 @@ class Twig_Util_DeprecationCollector
     /**
      * Returns deprecations for passed templates.
      *
-     * @param Iterator $iterator An iterator of templates (where keys are template names and values the contents of the template)
+     * @param Traversable $iterator An iterator of templates (where keys are template names and values the contents of the template)
      *
      * @return array An array of deprecations
      */
-    public function collect(Iterator $iterator)
+    public function collect(Traversable $iterator)
     {
         $this->deprecations = array();
 
diff --git a/test/Twig/Tests/Util/DeprecationCollectorTest.php b/test/Twig/Tests/Util/DeprecationCollectorTest.php
new file mode 100644
index 000000000..9f7d14d17
--- /dev/null
+++ b/test/Twig/Tests/Util/DeprecationCollectorTest.php
@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class Twig_Tests_Util_DeprecationCollectorTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @requires PHP 5.3
+     */
+    public function testCollect()
+    {
+        $twig = new Twig_Environment($this->getMockBuilder('Twig_LoaderInterface')->getMock());
+        $twig->addFunction(new Twig_SimpleFunction('deprec', array($this, 'deprec'), array('deprecated' => true)));
+
+        $collector = new Twig_Util_DeprecationCollector($twig);
+        $deprecations = $collector->collect(new Twig_Tests_Util_Iterator());
+
+        $this->assertEquals(array('Twig Function "deprec" is deprecated in deprec.twig at line 1.'), $deprecations);
+    }
+
+    public function deprec()
+    {
+    }
+}
+
+class Twig_Tests_Util_Iterator implements IteratorAggregate
+{
+    public function getIterator()
+    {
+        return new ArrayIterator(array(
+            'ok.twig' => '{{ foo }}',
+            'deprec.twig' => '{{ deprec("foo") }}',
+        ));
+    }
+}