diff --git a/lib/chrome.js b/lib/chrome.js
index c63c35a..6f7a51d 100644
--- a/lib/chrome.js
+++ b/lib/chrome.js
@@ -320,8 +320,10 @@ var ChromeObject = function() {
                 cmd.push("\"--user-agent=" + this.userAgent + "\"");
             }
             
-            // disable an unwanted features
-            cmd.push("--disable-features=" + this.disableFeatures.join(','));
+            // disable unwanted features
+            if (this.disableFeatures.length > 0) {
+                cmd.push("\"--disable-features=" + this.disableFeatures.join(',') + "\"");
+            }
 
             // set the URL
             cmd.push((this.isAppMode ? "--app=\"" : "\"") + url + "\"");