diff --git a/core/tests/Drupal/Tests/Core/Template/AttributeTest.php b/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
index f0abdd9..aea4d64 100644
--- a/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
@@ -99,7 +99,7 @@ public function testPrint() {
     $this->assertSelectEquals('div#example-id', '', 1, $html);
     $this->assertSelectEquals('div#example-id2', '', 0, $html);
 
-    $this->assertTrue(strpos($html, 'enabled') === 0);
+    $this->assertTrue(strpos($html, 'enabled') !== FALSE);
   }
 
   /**
@@ -111,4 +111,4 @@ public function testStorage() {
     $this->assertEquals(array('class' => new AttributeArray('class', array('example-class'))), $attribute->storage());
   }
 
-} 
+}