diff --git a/lib/index.js b/lib/index.js
index 5c82eeed..a113ac60 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -194,20 +194,20 @@ function $p(func) {
 function $sequence(t, factory) {
 
     function loop(factory, idx, result) {
-        var e;
+        var obj;
         try {
-            e = factory(t, idx); // get next promise;
+            obj = factory(t, idx); // get next promise;
         } catch (e) {
             return $p.reject(e.message || e);
         }
-        if (!e) {
+        if (!obj) {
             // no more promises left in the sequence;
             return $p.resolve(result);
         }
-        if (typeof(e.then) !== 'function') {
+        if (typeof(obj.then) !== 'function') {
             return $p.reject("Promise factory returned invalid result for index " + idx);
         }
-        return e.then(function (data) {
+        return obj.then(function (data) {
             result.push(data);
             return loop(factory, ++idx, result);
         }, function (reason) {