diff --git a/modules/authcache_p13n/tests/authcache_p13n.request-handler.test b/modules/authcache_p13n/tests/authcache_p13n.request-handler.test
index ae3202a..d7cc352 100644
--- a/modules/authcache_p13n/tests/authcache_p13n.request-handler.test
+++ b/modules/authcache_p13n/tests/authcache_p13n.request-handler.test
@@ -604,6 +604,10 @@ class AuthcacheP13nTestFragmentAssemblyBuilder extends DrupalUnitTestCase {
         'renderer' => new AuthcacheP13nTestEchoPartial(),
         'access' => new AuthcacheP13nTestEchoFragmentAccess(),
       ),
+      'inaccessible_param' => array(
+        'renderer' => new AuthcacheP13nTestEchoPartial(),
+        'access' => new AuthcacheP13nTestEchoFragmentAccess(),
+      ),
     );
     $builder = new AuthcacheP13nFragmentAssemblyBuilder($partials);
 
@@ -614,7 +618,10 @@ class AuthcacheP13nTestFragmentAssemblyBuilder extends DrupalUnitTestCase {
     );
 
     $user = $fake_user;
-    $input = array('a' => array('param_1' => array('account' => $fake_user)));
+    $input = array('a' => array(
+      'param_1' => array('account' => $fake_user),
+      'inaccessible_param' => array('account' => NULL)
+    ));
     $result = $builder->build($input, array());
     $this->assertEqual($result, $expected);
     $user = $orig_user;