diff --git a/src/UnitJS/Async.js b/src/UnitJS/Async.js
index 1df682d..06f1953 100644
--- a/src/UnitJS/Async.js
+++ b/src/UnitJS/Async.js
@@ -18,14 +18,14 @@ function apply(f, x) {
 }
 
 function bind() {
-	var m, steps, i;
+	var m, steps;
 	if(arguments.length < 1) {
 		return wrap();
 	}
 	m = arguments[0];
 	steps = arguments;
-	i = 1;
 	return function(f) {
+		var i = 1;
 		var step = function(x) {
 			if(i < steps.length) {
 				steps[i++](x)(step);
@@ -87,8 +87,8 @@ function run() {
 
 function sequence() {
 	var steps = arguments;
-	var i = 0;
 	return function(f) {
+		var i = 0;
 		var step = function(x) {
 			if(i < steps.length) {
 				steps[i++](step);