diff --git a/system/Test/TestResponse.php b/system/Test/TestResponse.php
index 215942d54fe9..d7bba80e9951 100644
--- a/system/Test/TestResponse.php
+++ b/system/Test/TestResponse.php
@@ -163,7 +163,7 @@ public function assertOK()
     }
 
     /**
-     * Asserts that the Response is considered OK.
+     * Asserts that the Response is considered not OK.
      *
      * @throws Exception
      */