diff --git a/src/oauth2.js b/src/oauth2.js
index ea6e1b7..0ef50b0 100644
--- a/src/oauth2.js
+++ b/src/oauth2.js
@@ -17,7 +17,7 @@ module.exports = function(p, callback) {
 			client_id: p.client_id || p.id,
 			client_secret: p.client_secret,
 			grant_type: 'authorization_code',
-			redirect_uri: encodeURIComponent(p.redirect_uri)
+			redirect_uri: p.redirect_uri
 		};
 	}
 	else if (p.refresh_token) {
@@ -40,7 +40,7 @@ module.exports = function(p, callback) {
 	}
 
 	// Convert the post object literal to a string
-	post = param(post, function(r) {return r;});
+	post = param(post);
 
 	// Create the request
 	var r = url.parse(grant_url);