diff --git a/README.md b/README.md
index 3add957..4d61130 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 follow these step:
 
-- Set 'YOUR GOOGLE ACCOUNT' in googleanalyticis.js placeholder with your google account id
+- Create angular constant GOOGLE_ACCOUNT with your google account id (http://docs.angularjs.org/api/auto/object/$provide#constant)
 - Add the service to your angular js app module:
 
 	``var app = angular.module('myapp', ['analytics']) {
diff --git a/analyticsService.js b/analyticsService.js
index a787d2e..657e2e5 100644
--- a/analyticsService.js
+++ b/analyticsService.js
@@ -1,8 +1,8 @@
 var _gaq = _gaq || [];
 
-angular.module('analytics', []).run(['$http', function($http) {
+angular.module('analytics', []).run(['$http', 'GOOGLE_ACCOUNT', function($http, GOOGLE_ACCOUNT) {
 
-	_gaq.push(['_setAccount', 'YOUR GOOGLE ACCOUNT']);
+	_gaq.push(['_setAccount', GOOGLE_ACCOUNT]);
 	_gaq.push(['_trackPageview']);
 
 	var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;