diff --git a/lib/proxy_writter.js b/lib/proxy_writter.js
index b76257a..8bc86f3 100644
--- a/lib/proxy_writter.js
+++ b/lib/proxy_writter.js
@@ -40,7 +40,7 @@ var proxyWritter = function(hostname, pathname) {
 	}
 
 	mdp.mkdirp(path.dirname(this.filename), 0755, function() {
-		if(path.existsSync(self.filename)) {
+		if(fs.existsSync(self.filename)) {
 			self.filename += "-" +  Date.now();
 		}
 		stream = fs.createWriteStream(self.filename, {flags:'w', 'encoding':null});