diff --git a/spec/core/PrettyPrintSpec.js b/spec/core/PrettyPrintSpec.js
index 4783ac4e..fcaab1e6 100644
--- a/spec/core/PrettyPrintSpec.js
+++ b/spec/core/PrettyPrintSpec.js
@@ -189,24 +189,13 @@ describe("jasmineUnderTest.pp", function () {
     expect(jasmineUnderTest.pp(obj)).toEqual("my toString");
   });
 
-  it("should stringify objects from named constructors with custom toString", function () {
-    var MyNamedConstructor = function MyNamedConstructor () {};
-    MyNamedConstructor.toString = function () { return ""; };
-
-    var a = {};
-    a.constructor = MyNamedConstructor;
-
-    expect(jasmineUnderTest.pp(a)).toEqual("MyNamedConstructor({ constructor: Function })");
-  });
-
   it("should stringify objects from anonymous constructors with custom toString", function () {
-    var MyAnonymousConstructor = function () {};
-    MyAnonymousConstructor.toString = function () { return ""; };
+    var MyAnonymousConstructor = (function() { return function () {}; })();
+    MyAnonymousConstructor.toString = function () { return ''; };
 
-    var a = {};
-    a.constructor = MyAnonymousConstructor;
+    var a = new MyAnonymousConstructor();
 
-    expect(jasmineUnderTest.pp(a)).toEqual("<anonymous>({ constructor: Function })");
+    expect(jasmineUnderTest.pp(a)).toEqual("<anonymous>({  })");
   });
 
   it("should handle objects with null prototype", function() {