diff --git a/lib/connect-logger.js b/lib/connect-logger.js
index 1f287c0..16eef50 100644
--- a/lib/connect-logger.js
+++ b/lib/connect-logger.js
@@ -1,8 +1,8 @@
 "use strict";
 var levels = require("./levels");
-var DEFAULT_FORMAT = ':remote-addr - -' + 
-  ' ":method :url HTTP/:http-version"' + 
-  ' :status :content-length ":referrer"' + 
+var DEFAULT_FORMAT = ':remote-addr - -' +
+  ' ":method :url HTTP/:http-version"' +
+  ' :status :content-length ":referrer"' +
   ' ":user-agent"';
 /**
  * Log requests with the given `options` or a `format` string.
@@ -52,7 +52,7 @@ function getLogger(logger4js, options) {
 		// nologs
 		if (nolog && nolog.test(req.originalUrl)) return next();
 		if (thislogger.isLevelEnabled(level) || options.level === 'auto') {
-      
+
 			var start = new Date()
 			, statusCode
 			, writeHead = res.writeHead
@@ -60,7 +60,7 @@ function getLogger(logger4js, options) {
 
 			// flag as logging
 			req._logging = true;
-      
+
 			// proxy for statusCode.
 			res.writeHead = function(code, headers){
 				res.writeHead = writeHead;
@@ -77,7 +77,7 @@ function getLogger(logger4js, options) {
 					level = levels.toLevel(options.level, levels.INFO);
 				}
 			};
-      
+
 			//hook on end request to emit the log entry of the HTTP request.
 			res.on('finish', function() {
 				res.responseTime = new Date() - start;
@@ -97,7 +97,7 @@ function getLogger(logger4js, options) {
 				}
 			});
 		}
-    
+
     //ensure next gets always called
     next();
   };
@@ -123,20 +123,20 @@ function format(str, req, res) {
     .replace(':referrer', req.headers.referer || req.headers.referrer || '')
     .replace(':http-version', req.httpVersionMajor + '.' + req.httpVersionMinor)
     .replace(
-      ':remote-addr', req.ip || req._remoteAddress || ( 
-      req.socket && 
+      ':remote-addr', req.ip || req._remoteAddress || (
+      req.socket &&
         (req.socket.remoteAddress || (req.socket.socket && req.socket.socket.remoteAddress))
     ))
     .replace(':user-agent', req.headers['user-agent'] || '')
     .replace(
-      ':content-length', 
-      (res._headers && res._headers['content-length']) || 
-        (res.__headers && res.__headers['Content-Length']) || 
+      ':content-length',
+      (res._headers && res._headers['content-length']) ||
+        (res.__headers && res.__headers['Content-Length']) ||
         '-'
     )
     .replace(/:req\[([^\]]+)\]/g, function(_, field){ return req.headers[field.toLowerCase()]; })
     .replace(/:res\[([^\]]+)\]/g, function(_, field){
-      return res._headers ? 
+      return res._headers ?
         (res._headers[field.toLowerCase()] || res.__headers[field])
         : (res.__headers && res.__headers[field]);
     });
@@ -155,9 +155,9 @@ function format(str, req, res) {
  *         NOT LOGGING http://example.com/hoge.gif and http://example.com/hoge.gif?fuga
  *         LOGGING http://example.com/hoge.agif
  *   1.2 in "\\.gif|\\.jpg$"
- *         NOT LOGGING http://example.com/hoge.gif and 
+ *         NOT LOGGING http://example.com/hoge.gif and
  *           http://example.com/hoge.gif?fuga and http://example.com/hoge.jpg?fuga
- *         LOGGING http://example.com/hoge.agif, 
+ *         LOGGING http://example.com/hoge.agif,
  *           http://example.com/hoge.ajpg and http://example.com/hoge.jpg?hoge
  *   1.3 in "\\.(gif|jpe?g|png)$"
  *         NOT LOGGING http://example.com/hoge.gif and http://example.com/hoge.jpeg
@@ -175,15 +175,15 @@ function createNoLogCondition(nolog) {
 	if (nolog) {
     if (nolog instanceof RegExp) {
       regexp = nolog;
-    } 
-    
+    }
+
     if (typeof nolog === 'string') {
       regexp = new RegExp(nolog);
     }
-    
+
     if (Array.isArray(nolog)) {
       var regexpsAsStrings = nolog.map(
-        function convertToStrings(o) { 
+        function convertToStrings(o) {
           return o.source ? o.source : o;
         }
       );