diff --git a/lib/assetmanager.js b/lib/assetmanager.js
index 769430e..f833ffa 100644
--- a/lib/assetmanager.js
+++ b/lib/assetmanager.js
@@ -123,7 +123,6 @@ module.exports = function assetManager (assets) {
 	});
 
 	this.generateCache = function (generateGroup) {
-		var self = this;
 		settings.forEach(function (group, groupName) {
 			var userAgentMatches = {};
 			if (group.preManipulate) {