diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index f57ff799..1c3945e9 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -1988,8 +1988,8 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       // Objects with different constructors are not equivalent, but `Object`s
       // or `Array`s from different frames are.
       var aCtor = a.constructor, bCtor = b.constructor;
-      if (aCtor !== bCtor && !(isFunction(aCtor) && aCtor instanceof aCtor &&
-                               isFunction(bCtor) && bCtor instanceof bCtor)) {
+      if (aCtor !== bCtor && !(isObjectConstructor(aCtor) &&
+                               isObjectConstructor(bCtor))) {
         return false;
       }
     }
@@ -2041,14 +2041,22 @@ getJasmineRequireObj().matchersUtil = function(j$) {
 
       return extraKeys;
     }
+  }
+  
+  function has(obj, key) {
+    return Object.prototype.hasOwnProperty.call(obj, key);
+  }
 
-    function has(obj, key) {
-      return Object.prototype.hasOwnProperty.call(obj, key);
-    }
+  function isFunction(obj) {
+    return typeof obj === 'function';
+  }
 
-    function isFunction(obj) {
-      return typeof obj === 'function';
-    }
+  function isObjectConstructor(ctor) {
+    // aCtor instanceof aCtor is true for the Object and Function
+    // constructors (since a constructor is-a Function and a function is-a
+    // Object). We don't just compare ctor === Object because the constructor
+    // might come from a different frame with different globals.
+    return isFunction(ctor) && ctor instanceof ctor;
   }
 };