--- a/browser/extensions/e10srollout/bootstrap.js
+++ b/browser/extensions/e10srollout/bootstrap.js
@@ -160,10 +160,20 @@ function optedOut() {
 
 /* If this function returns a non-empty string, it
  * means that this particular user should be temporarily
  * disqualified due to some particular reason.
  * If a user shouldn't be disqualified, then an empty
  * string must be returned.
  */
 function getTemporaryDisqualification() {
+  let applicationLanguage =
+    Cc["@mozilla.org/chrome/chrome-registry;1"]
+      .getService(Ci.nsIXULChromeRegistry)
+      .getSelectedLocale("global")
+      .split("-")[0];
+
+  if (applicationLanguage == "ru") {
+    return "ru";
+  }
+
   return "";
 }