diff --git a/index.js b/index.js
index 01bd58e..f52d861 100644
--- a/index.js
+++ b/index.js
@@ -86,6 +86,7 @@ Traverse.prototype.deepEqual = function (obj) {
                 // both regexps on account of the __proto__ check
                 if (x.toString() != y.toString()) notEqual();
             }
+            else if (x !== y) notEqual();
         }
         else if (typeof x === 'object') {
             if (x === null || y === null) {
diff --git a/test/equal.js b/test/equal.js
index 4290c47..f8a715f 100644
--- a/test/equal.js
+++ b/test/equal.js
@@ -64,7 +64,7 @@ exports.deepInstances = function () {
     ));
     
     var f = function (x) { return x * 2 };
-    assert.ok(!traverse.deepEqual(
+    assert.ok(traverse.deepEqual(
         [ f ], [ f ],
         'these functions are actually equal'
     ));