diff --git a/modules/gallery/tests/Html_Helper_Test.php b/modules/gallery/tests/Html_Helper_Test.php
index 8f665e0c..1662b866 100644
--- a/modules/gallery/tests/Html_Helper_Test.php
+++ b/modules/gallery/tests/Html_Helper_Test.php
@@ -27,8 +27,9 @@ class Html_Helper_Test extends Unit_Test_Case {
 
   public function purify_test() {
     $safe_string = html::purify("hello <p  >world</p>");
-    $expected =
-      module::is_active("htmlpurifier") ? "hello <p>world</p>" : "hello &lt;p  &gt;world&lt;/p&gt;";
+    $expected = method_exists("purifier", "purify")
+      ? "hello <p>world</p>"
+      : "hello &lt;p  &gt;world&lt;/p&gt;";
     $this->assert_equal($expected, $safe_string->unescaped());
     $this->assert_true($safe_string instanceof SafeString);
   }