diff --git a/lib/chrome.js b/lib/chrome.js
index 9de3508..e1979ba 100644
--- a/lib/chrome.js
+++ b/lib/chrome.js
@@ -224,6 +224,8 @@ var ChromeObject = function() {
 				return JSON.parse(HTTP.get("http://127.0.0.1:" + this.debuggingPort + "/json"));
 			} catch (e) {
 				console.error("ChromeObject.getPageList() -> " + e.message);
+				sleep(1);
+				return this.getPageList();
 			}
 		} else {
 			console.error("Remote debugging unavailable");
@@ -394,7 +396,7 @@ var ChromeObject = function() {
 	
 	this.setTitle = function(title) {
 		if (this.debuggingPort > 0) {
-			for (var i = 0; i < 10; i++) {
+			for (var i = 0; i < 3; i++) {
 				this.evaluate('document.title = "' + title + '"');
 			}
 		}
@@ -432,6 +434,19 @@ var ChromeObject = function() {
 		max = Math.floor(max);
 		return Math.floor(Math.random() * (max - min + 1)) + min;
 	};
+	
+	this.checkDebuggingPort = function() {
+		var isChecked = false;
+
+		if (this.debuggingPort > 0) {
+			var result = SHELL.exec("netstat -ano | findstr :" + this.debuggingPort);
+			if (result.indexOf(":" + this.debuggingPort) > -1) {
+				isChecked = true;
+			}
+		}
+
+		return isChecked;
+	};
 
 	this.create();
 };
@@ -450,11 +465,18 @@ exports.start = function(url, proxyPort, profileName, userDataDir, installedDir)
 };
 
 exports.startWithDebugging = function(url, proxy, profileName, debuggingPort) {
-	return (new ChromeObject())
-		.setProxy(proxy)
-		.setProfile(profileName, null)
-		.setUserDataDir(null)
-		.setDebuggingPort(debuggingPort)
-		.open(url)
+	var isChecked = false;
+	var browser = (new ChromeObject())
+					.setProxy(proxy)
+					.setProfile(profileName, null)
+					.setUserDataDir(null)
+					.setDebuggingPort(debuggingPort)
 	;
+
+	while (!isChecked) {
+		browser.open(url);
+		isChecked = browser.checkDebuggingPort();
+	}
+
+	return browser;
 };