diff --git a/test/built-ins/String/prototype/indexOf/S15.5.4.7_A1_T11.js b/test/built-ins/String/prototype/indexOf/S15.5.4.7_A1_T11.js
deleted file mode 100644
index 017e5b240e..0000000000
--- a/test/built-ins/String/prototype/indexOf/S15.5.4.7_A1_T11.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: String.prototype.indexOf(searchString, position)
-es5id: 15.5.4.7_A1_T11
-description: Instance is Date(0) object
----*/
-
-var __instance = new Date(0);
-
-__instance.indexOf = String.prototype.indexOf;
-
-//////////////////////////////////////////////////////////////////////////////
-//CHECK#1
-if ((__instance.getTimezoneOffset()>0 ? __instance.indexOf('31') : __instance.indexOf('01')) !== 8) {
-  $ERROR('#1: __instance = new Date(0); __instance.indexOf = String.prototype.indexOf;  (__instance.getTimezoneOffset()>0 ? __instance.indexOf(\'31\') : __instance.indexOf(\'01\')) === 8. Actual: '+(__instance.getTimezoneOffset()>0 ? __instance.indexOf('31') : __instance.indexOf('01')) ); 
-}
-//
-//////////////////////////////////////////////////////////////////////////////