diff --git a/lib/oauth.js b/lib/oauth.js
index d0313e7..c7acfff 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -42,7 +42,7 @@ exports.merge = function(a,b) {
 	if (!b || !(b instanceof Object)) {
 		return a;
 	}
-	
+
 	var keys = Object.keys(b);
 
 	for (var key in keys) {
@@ -68,11 +68,11 @@ exports.normalize = function(obj)
 		if (obj[prop].constructor === Array) {
 			obj[prop] = obj[prop].sort();
 			for(var child in obj[prop]) {
-				prop[child] = oauth.normalize(child);
+				prop[child] = exports.normalize(child);
 			}
 		}
 		else if (obj[prop] instanceof Object) {
-			obj[prop] = oauth.normalize(obj[prop]);
+			obj[prop] = exports.normalize(obj[prop]);
 		}
 	}
 	return obj;
@@ -96,7 +96,7 @@ exports.normalizeURL = function(path) {
 		slashes:  true
 	};
 
-	if ((p.port == 80 && p.protocol == 'http:') || 
+	if ((p.port == 80 && p.protocol == 'http:') ||
 		(p.port == 443 && p.protocol == 'https:')) {
 		delete ret.port;
 	}
@@ -127,7 +127,7 @@ exports.request = function(options, callback) {
 	}
 
 	var uri = exports.fillURL(options.path, options.host, options.port, options.https);
-	options.headers = signRequest(options.method, uri, options.headers, 
+	options.headers = signRequest(options.method, uri, options.headers,
 		options.body, options.oauth_signature, options.realm);
 
 	var req;
@@ -136,15 +136,15 @@ exports.request = function(options, callback) {
 	} else {
 		req = http.request(options, callback);
 	}
-	
+
 	req.write = function(chunk, normalize) {
 		if (normalize || options.body) {
 			chunk = normalizeBody(chunk);
 		}
-		
+
 		return http.ClientRequest.prototype.write.call(this, chunk, 'utf-8');
 	};
-    
+
     req.end();
 	return req;
 };
@@ -192,7 +192,7 @@ function signRequest(method, path, headers, body, signature, realm) {
 	else {
 		throw new TypeError("Invalid signature type");
 	}
-	
+
 	var esc = querystring.escape;
 	querystring.escape = _encodeURI;
     auth.realm = realm;
@@ -203,7 +203,7 @@ function signRequest(method, path, headers, body, signature, realm) {
 	return headers;
 }
 
-exports.signRequest = signRequest; 
+exports.signRequest = signRequest;
 
 function nonce() {
 	return uuid();
@@ -312,13 +312,13 @@ Signature.prototype.sign = function() {
 Signature.prototype.baseString = function(method, url, params) {
 
 	querystring.escape = _encodeURI;
-	
+
 	var baseString = [
 		method.toUpperCase(),
 		_encodeURI(exports.normalizeURL(url)),
 		_encodeURI(querystring.stringify(exports.normalize(params)))
 	].join('&');
-	
+
 	return baseString;
 };