diff --git a/lib/services/oauth2.js b/lib/services/oauth2.js
index b6210ee..f0cc807 100644
--- a/lib/services/oauth2.js
+++ b/lib/services/oauth2.js
@@ -8,7 +8,8 @@ function OAuth2(options){
   // This option is necessary when the Oauth service has a self-signed cert.
   // Hopefully this is only set to false in the safety of testing but not out in the wild.
   this.rejectUnauthorizedRequests = !(options && options.rejectUnauthorized == false);
-
+  this.host = options.host || null;
+  
   EventEmitter.call(this);
 }
 
@@ -19,7 +20,9 @@ OAuth2.prototype.parseURI = function(request) {
     , secure = request.connection.encrypted || proto == "https"
     , protocol = secure ? "https" : "http"
     , host = request.headers.host || request.connection.remoteAddress
-
+    
+    if (this.host) host = this.host;
+    
   return url.parse(protocol + "://" + host + request.url, true)
 }