diff --git a/tests/HTMLPurifier/AttrDef/CSS/CompositeTest.php b/tests/HTMLPurifier/AttrDef/CSS/CompositeTest.php
index 0a4e496f..037131fb 100644
--- a/tests/HTMLPurifier/AttrDef/CSS/CompositeTest.php
+++ b/tests/HTMLPurifier/AttrDef/CSS/CompositeTest.php
@@ -60,8 +60,8 @@ class HTMLPurifier_AttrDef_CSS_CompositeTest extends HTMLPurifier_AttrDefHarness
         $def2->expectOnce('validate', $def_params);
         $def2->setReturnValue('validate', $output, $def_params);
         
-        $this->assertIdentical($output,
-            $def->validate($input, $config, $context));
+        $result = $def->validate($input, $config, $context);
+        $this->assertIdentical($output, $result);
         
         $def1->tally();
         $def2->tally();
@@ -80,8 +80,8 @@ class HTMLPurifier_AttrDef_CSS_CompositeTest extends HTMLPurifier_AttrDefHarness
         $def2->expectOnce('validate', $def_params);
         $def2->setReturnValue('validate', false, $def_params);
         
-        $this->assertIdentical($output,
-            $def->validate($input, $config, $context));
+        $result = $def->validate($input, $config, $context);
+        $this->assertIdentical($output, $result);
         
         $def1->tally();
         $def2->tally();