diff --git a/core/tests/Drupal/Tests/Component/DrupalComponentTest.php b/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
index 41cb31d..7cd66f2 100644
--- a/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
+++ b/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
@@ -127,7 +127,9 @@ public function testAssertNoCoreUseage($expected_pass, $file_data) {
     catch (\PHPUnit_Framework_AssertionFailedError $e) {
       $pass = false;
     }
-    $this->assertEquals($expected_pass, $pass, "");
+    $this->assertEquals($expected_pass, $pass, $expected_pass ?
+      'Test caused a false positive' :
+      'Test failed to detect Core usage');
   }
 
 }