diff --git a/client/src/services/GameDataManager.js b/client/src/services/GameDataManager.js
index e83e565..81d07b5 100644
--- a/client/src/services/GameDataManager.js
+++ b/client/src/services/GameDataManager.js
@@ -9,7 +9,7 @@ class GameDataManager {
     this.enemies = new Map();
     this.translations = {};
     this.manifest = {};
-    this.currentLang = localStorage.getItem("selected_lang") || "en_us";
+    this.currentLang = localStorage.getItem("selected_lang") || "en_US";
     this.isLoaded = false;
   }