diff --git a/lib/env.js b/lib/env.js
index 60996c66..9be55ba6 100644
--- a/lib/env.js
+++ b/lib/env.js
@@ -302,7 +302,7 @@ Environment.prototype.cache = function cache() {
  * Cache all necessary modules.
  */
 
-Evironment.prototype.require = function _require(name, path) {
+Environment.prototype.require = function _require(name, path) {
   var cache;
   this.__defineGetter__(name, function() {
     if (!cache)