diff --git a/src/controllers/api/loginController.ts b/src/controllers/api/loginController.ts
index 4ba97134..01e5af46 100644
--- a/src/controllers/api/loginController.ts
+++ b/src/controllers/api/loginController.ts
@@ -41,7 +41,7 @@ export const loginController: RequestHandler = async (request, response) => {
                 email: loginRequest.email,
                 password: loginRequest.password,
                 DisplayName: name,
-                CountryCode: loginRequest.lang.toUpperCase(),
+                CountryCode: loginRequest.lang?.toUpperCase() ?? "EN",
                 ClientType: loginRequest.ClientType == "webui-register" ? "webui" : loginRequest.ClientType,
                 CrossPlatformAllowed: true,
                 ForceLogoutVersion: 0,
@@ -88,7 +88,7 @@ export const loginController: RequestHandler = async (request, response) => {
 
         account.ClientType = loginRequest.ClientType;
         account.Nonce = nonce;
-        account.CountryCode = loginRequest.lang.toUpperCase();
+        account.CountryCode = loginRequest.lang?.toUpperCase() ?? "EN";
         account.BuildLabel = buildLabel;
     }
     await account.save();
diff --git a/src/types/loginTypes.ts b/src/types/loginTypes.ts
index 8bbee787..5fcb0e53 100644
--- a/src/types/loginTypes.ts
+++ b/src/types/loginTypes.ts
@@ -35,11 +35,11 @@ export interface ILoginRequest {
     email: string;
     password: string;
     time: number;
-    s: string;
-    lang: string;
+    s?: string;
+    lang?: string;
     date: number;
-    ClientType: string;
-    PS: string;
+    ClientType?: string;
+    PS?: string;
     kick?: boolean;
 }