diff --git a/lib/strategy.js b/lib/strategy.js
index 8ac16e4..a017c81 100644
--- a/lib/strategy.js
+++ b/lib/strategy.js
@@ -222,7 +222,7 @@ OAuth2Strategy.prototype.authenticate = function(req, options) {
       return this.error(ex);
     }
   } else {
-    var params = this.authorizationParams(options);
+    var params = this.authorizationParams(options, req);
     params.response_type = 'code';
     if (callbackURL) { params.redirect_uri = callbackURL; }
     var scope = options.scope || this._scope;
@@ -317,7 +317,7 @@ OAuth2Strategy.prototype.userProfile = function(accessToken, done) {
  * @return {Object}
  * @api protected
  */
-OAuth2Strategy.prototype.authorizationParams = function(options) {
+OAuth2Strategy.prototype.authorizationParams = function(options, req) {
   return {};
 };