diff --git a/library/HTMLPurifier.php b/library/HTMLPurifier.php
index bada5188..76abb544 100644
--- a/library/HTMLPurifier.php
+++ b/library/HTMLPurifier.php
@@ -240,12 +240,16 @@ class HTMLPurifier
     public function purifyArray($array_of_html, $config = null)
     {
         $context_array = array();
-        foreach ($array_of_html as $key => $html) {
-            $array_of_html[$key] = $this->purify($html, $config);
+        foreach($array_of_html as $key=>$value){
+            if (is_array($value)) {
+                $array[$key] = $this->purifyArray($value, $config);
+            } else {
+                $array[$key] = $this->purify($value, $config);
+            }
             $context_array[$key] = $this->context;
         }
         $this->context = $context_array;
-        return $array_of_html;
+        return $array;
     }
 
     /**
diff --git a/tests/HTMLPurifierTest.php b/tests/HTMLPurifierTest.php
index 1fbcddf8..2d28bc3c 100644
--- a/tests/HTMLPurifierTest.php
+++ b/tests/HTMLPurifierTest.php
@@ -22,6 +22,16 @@ class HTMLPurifierTest extends HTMLPurifier_Harness
 
     }
 
+    public function test_purifyArray_nested()
+    {
+        $this->assertIdentical(
+            $this->purifier->purifyArray(
+                array('Good', '<b>Sketchy', 'foo' => array('bar' => '<script>bad</script>'))
+            ),
+            array('Good', '<b>Sketchy</b>', 'foo' => array('bar' => ''))
+        );
+    }
+
     public function testGetInstance()
     {
         $purifier  = HTMLPurifier::getInstance();