diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
index 232fff22c0d0..8761aeb17401 100644
--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -1960,13 +1960,6 @@ var UserAgent = {
         if (tab == null)
           break;
 
-        if (channel.URI.host.indexOf("youtube") != -1) {
-          let ua = Cc["@mozilla.org/network/protocol;1?name=http"].getService(Ci.nsIHttpProtocolHandler).userAgent;
-#expand let version = "__MOZ_APP_VERSION__";
-          ua += " Fennec/" + version;
-          channel.setRequestHeader("User-Agent", ua, false);
-        }
-
         // Send desktop UA if "Request Desktop Site" is enabled
         if (tab.desktopMode)
           channel.setRequestHeader("User-Agent", this.DESKTOP_UA, false);