1 files changed, 2 insertions, 9 deletions
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-402.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-402.js
index 976842919..1ef35f2bc 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-402.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-402.js
@@ -6,11 +6,8 @@ es5id: 15.2.3.6-4-402
 description: >
     ES5 Attributes - [[Value]] attribute of inherited property of
     [[Prototype]] internal property is correct (String instance)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-        try {
             Object.defineProperty(String.prototype, "prop", {
                 value: 1001,
                 writable: true,
@@ -19,9 +16,5 @@ function testcase() {
             });
             var strObj = new String();
 
-            return !strObj.hasOwnProperty("prop") && strObj.prop === 1001;
-        } finally {
-            delete String.prototype.prop;
-        }
-    }
-runTestCase(testcase);
+assert.sameValue(strObj.hasOwnProperty("prop"), false, 'strObj.hasOwnProperty("prop")');
+assert.sameValue(strObj.prop, 1001, 'strObj.prop');