diff --git a/tests/jerry/equality.js b/tests/jerry/equality.js
index ea7a290dce..20db2970a5 100644
--- a/tests/jerry/equality.js
+++ b/tests/jerry/equality.js
@@ -16,17 +16,17 @@ assert((5 == 5) == true);
 assert((7 != 2) == true);
 
 var num = 0;
-//var obj = new String("0");
+var obj = new String("0");
 var str = "0";
 var b = false;
 
 assert(num === num);
-//assert(obj === obj);
+assert(obj === obj);
 assert(str === str);
 
-//assert((num === obj) == false);
+assert((num === obj) == false);
 assert((num === str) == false);
-//assert((obj === str) == false);
-//assert((null === undefined) == false);
-//assert((obj === null) == false);
-//assert((obj === undefined) == false);
+assert((obj === str) == false);
+assert((null === undefined) == false);
+assert((obj === null) == false);
+assert((obj === undefined) == false);