diff --git a/simple-translate/background.js b/simple-translate/background.js
index 66f0a5c..3fdbdb4 100644
--- a/simple-translate/background.js
+++ b/simple-translate/background.js
@@ -27,6 +27,7 @@ function initialSetting() {
         case "zh-CN":
         case "zh-TW":
         case "ko":
+        case "ru":
             targetLang = browser.i18n.getUILanguage();
             secondTargetLang="en";
             break;