diff --git a/lib/sinon/mock.js b/lib/sinon/mock.js
index 54084d8d0..5c27d17a2 100644
--- a/lib/sinon/mock.js
+++ b/lib/sinon/mock.js
@@ -71,6 +71,7 @@ extend(mock, {
         }
 
         var expectation = mockExpectation.create(method);
+        extend(expectation, this.object[method]);
         push.call(this.expectations[method], expectation);
 
         return expectation;
diff --git a/test/issues/issues-test.js b/test/issues/issues-test.js
index d9fff69f2..79bfb8345 100644
--- a/test/issues/issues-test.js
+++ b/test/issues/issues-test.js
@@ -375,4 +375,19 @@ describe("issues", function () {
             });
         });
     });
+
+    describe("#1442 - callThrough with a mock expectation", function () {
+        it("should call original method", function () {
+            var foo = {
+                bar: function () { }
+            };
+
+            var mock = this.sandbox.mock(foo);
+            mock.expects("bar").callThrough();
+
+            foo.bar();
+
+            mock.verify();
+        });
+    });
 });