diff --git a/test/built-ins/Object/isExtensible/15.2.3.13-2-1.js b/test/built-ins/Object/isExtensible/15.2.3.13-2-1.js
index f8b10b8cc9..c636bd7c49 100644
--- a/test/built-ins/Object/isExtensible/15.2.3.13-2-1.js
+++ b/test/built-ins/Object/isExtensible/15.2.3.13-2-1.js
@@ -10,7 +10,7 @@ description: Object.isExtensible returns true for all built-in objects (Global)
 includes: [runTestCase.js]
 ---*/
 
-global = this;
+var global = this;
 function testcase() {
   // in non-strict mode, 'this' is bound to the global object.
   var e = Object.isExtensible(this);
diff --git a/test/built-ins/Object/prototype/S15.2.3.1_A1.js b/test/built-ins/Object/prototype/S15.2.3.1_A1.js
index b13d2ed1a3..21192d1077 100644
--- a/test/built-ins/Object/prototype/S15.2.3.1_A1.js
+++ b/test/built-ins/Object/prototype/S15.2.3.1_A1.js
@@ -5,6 +5,7 @@
 info: The Object.prototype property has the attribute ReadOnly
 es5id: 15.2.3.1_A1
 description: Checking if varying "Object.prototype" property fails
+flags: [noStrict]
 ---*/
 
 var obj = Object.prototype;
diff --git a/test/built-ins/Object/prototype/S15.2.3.1_A2.js b/test/built-ins/Object/prototype/S15.2.3.1_A2.js
index 28a9d43b32..996c86525b 100644
--- a/test/built-ins/Object/prototype/S15.2.3.1_A2.js
+++ b/test/built-ins/Object/prototype/S15.2.3.1_A2.js
@@ -15,7 +15,7 @@ if (Object.propertyIsEnumerable('prototype')) {
 // CHECK#2
 var cout=0;
 
-for (p in Object){
+for (var p in Object){
   if (p==="prototype") cout++;
 }
 
diff --git a/test/built-ins/Object/prototype/S15.2.4_A4.js b/test/built-ins/Object/prototype/S15.2.4_A4.js
index 5e941575aa..1e93ebba9f 100644
--- a/test/built-ins/Object/prototype/S15.2.4_A4.js
+++ b/test/built-ins/Object/prototype/S15.2.4_A4.js
@@ -14,7 +14,7 @@ includes:
 
 //CHECK#1
 try {
-  instance = new Object.prototype;
+  var instance = new Object.prototype;
   $FAIL('#1: Since Object prototype object is not function it has not [[create]] method');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A10.js b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A10.js
index d7e3f2c3f1..9076d9ae95 100644
--- a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A10.js
+++ b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A10.js
@@ -9,6 +9,7 @@ es5id: 15.2.4.5_A10
 description: >
     Checking if varying the Object.prototype.hasOwnProperty.length
     property fails
+flags: [noStrict]
 includes: [$FAIL.js]
 ---*/
 
diff --git a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A7.js b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A7.js
index 62c077b989..df3210c9ad 100644
--- a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A7.js
+++ b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A7.js
@@ -13,7 +13,7 @@ includes:
 var FACTORY = Object.prototype.hasOwnProperty;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.hasOwnProperty can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A8.js b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A8.js
index b6181e4e5e..d412a66666 100644
--- a/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A8.js
+++ b/test/built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A8.js
@@ -24,7 +24,7 @@ if (Object.prototype.hasOwnProperty.propertyIsEnumerable('length')) {
 }
 
 // CHECK#2
-for (p in Object.prototype.hasOwnProperty){
+for (var p in Object.prototype.hasOwnProperty){
   if (p==="length")
         $ERROR('#2: the Object.prototype.hasOwnProperty.length property has the attributes DontEnum');
 }
diff --git a/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A7.js b/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A7.js
index be11ead07c..3dea47d2bf 100644
--- a/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A7.js
+++ b/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A7.js
@@ -13,7 +13,7 @@ includes:
 var FACTORY = Object.prototype.isPrototypeOf;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.isPrototypeOf can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A8.js b/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A8.js
index 44a27f6bc9..508fe89294 100644
--- a/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A8.js
+++ b/test/built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A8.js
@@ -24,7 +24,7 @@ if (Object.prototype.isPrototypeOf.propertyIsEnumerable('length')) {
 }
 
 // CHECK#2
-for (p in Object.prototype.isPrototypeOf){
+for (var p in Object.prototype.isPrototypeOf){
   if (p==="length")
         $ERROR('#2: the Object.prototype.isPrototypeOf.length property has the attributes DontEnum');
 }
diff --git a/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A7.js b/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A7.js
index 466e27dcc4..600e6d2c7e 100644
--- a/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A7.js
+++ b/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A7.js
@@ -15,7 +15,7 @@ includes:
 var FACTORY = Object.prototype.propertyIsEnumerable;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.propertyIsEnumerable can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A8.js b/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A8.js
index 211eb3581f..f6c6b3a734 100644
--- a/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A8.js
+++ b/test/built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A8.js
@@ -24,7 +24,7 @@ if (Object.prototype.propertyIsEnumerable.propertyIsEnumerable('length')) {
 }
 
 // CHECK#2
-for (p in Object.prototype.propertyIsEnumerable){
+for (var p in Object.prototype.propertyIsEnumerable){
   if (p==="length")
         $ERROR('#2: the Object.prototype.propertyIsEnumerable.length property has the attributes DontEnum');
 }
diff --git a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A10.js b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A10.js
index 61c0ade127..c71880656a 100644
--- a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A10.js
+++ b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A10.js
@@ -9,6 +9,7 @@ es5id: 15.2.4.3_A10
 description: >
     Checking if varying the Object.prototype.toLocaleString.length
     property fails
+flags: [noStrict]
 includes: [$FAIL.js]
 ---*/
 
diff --git a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A7.js b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A7.js
index 464d702fb3..1f1600e980 100644
--- a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A7.js
+++ b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A7.js
@@ -13,7 +13,7 @@ includes:
 var FACTORY = Object.prototype.toLocaleString;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.toLocaleString can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A8.js b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A8.js
index e5c10ec848..b051815fa0 100644
--- a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A8.js
+++ b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A8.js
@@ -24,7 +24,7 @@ if (Object.prototype.toLocaleString.propertyIsEnumerable('length')) {
 }
 
 // CHECK#2
-for (p in Object.prototype.toLocaleString){
+for (var p in Object.prototype.toLocaleString){
   if (p==="length")
         $ERROR('#2: the Object.prototype.toLocaleString.length property has the attributes DontEnum');
 }
diff --git a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A9.js b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A9.js
index b00e8597a1..b01ed66357 100644
--- a/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A9.js
+++ b/test/built-ins/Object/prototype/toLocaleString/S15.2.4.3_A9.js
@@ -9,7 +9,6 @@ es5id: 15.2.4.3_A9
 description: >
     Checknig if deleting of the Object.prototype.toLocaleString.length
     property fails
-flags: [noStrict]
 includes: [$FAIL.js]
 ---*/
 
diff --git a/test/built-ins/Object/prototype/toString/S15.2.4.2_A7.js b/test/built-ins/Object/prototype/toString/S15.2.4.2_A7.js
index df58ac94dc..6506fb2875 100644
--- a/test/built-ins/Object/prototype/toString/S15.2.4.2_A7.js
+++ b/test/built-ins/Object/prototype/toString/S15.2.4.2_A7.js
@@ -13,7 +13,7 @@ includes:
 var FACTORY = Object.prototype.toString;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.toString can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/toString/S15.2.4.2_A9.js b/test/built-ins/Object/prototype/toString/S15.2.4.2_A9.js
index bb8300ac86..200d8cd171 100644
--- a/test/built-ins/Object/prototype/toString/S15.2.4.2_A9.js
+++ b/test/built-ins/Object/prototype/toString/S15.2.4.2_A9.js
@@ -9,7 +9,6 @@ es5id: 15.2.4.2_A9
 description: >
     Checknig if deleting of the Object.prototype.toString.length
     property fails
-flags: [noStrict]
 includes: [$FAIL.js]
 ---*/
 
diff --git a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A10.js b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A10.js
index 4e85b00fde..878ecf265e 100644
--- a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A10.js
+++ b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A10.js
@@ -7,6 +7,7 @@ es5id: 15.2.4.4_A10
 description: >
     Checking if varying the Object.prototype.valueOf.length property
     fails
+flags: [noStrict]
 includes: [$FAIL.js]
 ---*/
 
diff --git a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A7.js b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A7.js
index 4b7bd6d822..339d5e1f05 100644
--- a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A7.js
+++ b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A7.js
@@ -13,7 +13,7 @@ includes:
 var FACTORY = Object.prototype.valueOf;
 
 try {
-  instance = new FACTORY;
+  var instance = new FACTORY;
   $FAIL('#1: Object.prototype.valueOf can\'t be used as a constructor');
 } catch (e) {
   $PRINT(e);
diff --git a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A8.js b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A8.js
index de6d6322e0..c37406fa0c 100644
--- a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A8.js
+++ b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A8.js
@@ -22,7 +22,7 @@ if (Object.prototype.valueOf.propertyIsEnumerable('length')) {
 }
 
 // CHECK#2
-for (p in Object.prototype.valueOf){
+for (var p in Object.prototype.valueOf){
   if (p==="length")
         $ERROR('#2: the Object.prototype.valueOf.length property has the attributes DontEnum');
 }
diff --git a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A9.js b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A9.js
index 539ab6308e..d04f6a374b 100644
--- a/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A9.js
+++ b/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A9.js
@@ -9,7 +9,6 @@ es5id: 15.2.4.4_A9
 description: >
     Checknig if deleting of the Object.prototype.valueOf.length
     property fails
-flags: [noStrict]
 includes: [$FAIL.js]
 ---*/