diff --git a/spec/core/SpySpec.js b/spec/core/SpySpec.js
index c11d2836..8ab87da1 100644
--- a/spec/core/SpySpec.js
+++ b/spec/core/SpySpec.js
@@ -187,7 +187,7 @@ describe('Spies', function () {
 
   it('should be able to reset a spy', function() {
     var TestClass = { someFunction: function() {} };
-    spyOn(TestClass, 'someFunction');
+    env.spyOn(TestClass, 'someFunction');
 
     expect(TestClass.someFunction).not.toHaveBeenCalled();
     TestClass.someFunction();
@@ -197,6 +197,16 @@ describe('Spies', function () {
     expect(TestClass.someFunction.calls.count()).toEqual(0);
   });
 
+  it("preserves the properties of the spied function", function() {
+    var TestClass = function() {};
+    TestClass.prototype.someFunction = function() {};
+    TestClass.prototype.someFunction.bob = "test";
+
+    var spy = env.spyOn(TestClass.prototype, 'someFunction');
+
+    expect(spy.bob).toEqual("test");
+  });
+
   describe("createSpyObj", function() {
     it("should create an object with a bunch of spy methods when you call jasmine.createSpyObj()", function() {
       var spyObj = j$.createSpyObj('BaseName', ['method1', 'method2']);
diff --git a/src/core/base.js b/src/core/base.js
index 19b3a576..f4e106c7 100644
--- a/src/core/base.js
+++ b/src/core/base.js
@@ -68,6 +68,10 @@ getJasmineRequireObj().base = function(j$) {
     spy.and = spyStrategy;
     spy.calls = callTracker;
 
+    for (prop in originalFn) {
+      spy[prop] = originalFn[prop];
+    }
+
     return spy;
   };