diff --git a/src/locales/en/menu.ts b/src/locales/en/menu.ts
index bc8e5b95447..ca67e5974c7 100644
--- a/src/locales/en/menu.ts
+++ b/src/locales/en/menu.ts
@@ -13,6 +13,15 @@ export const menu: SimpleTranslationEntries = {
     "newGame": "New Game",
     "selectGameMode": "Select a game mode.",
     "logInOrCreateAccount": "Log in or create an account to start. No email required!",
+    "username": "Username",
+    "password": "Password",
+    "login": "Login",
+    "register": "Register",
+    "emptyUsername": "Username must not be empty",
+    "invalidUsername": "The provided username is invalid",
+    "invalidPassword": "The provided password is invalid",
+    "accountNonExistent": "The provided user does not exist",
+    "unmatchingPassword": "The provided password does not match",
     "failedToLoadSaveData": "Failed to load save data. Please reload the page.\nIf this continues, please contact the administrator.",
     "sessionSuccess": "Session loaded successfully.",
     "failedToLoadSession": "Your session data could not be loaded.\nIt may be corrupted.",
diff --git a/src/locales/fr/menu.ts b/src/locales/fr/menu.ts
index aa4ae17cd1c..ebeb84636dd 100644
--- a/src/locales/fr/menu.ts
+++ b/src/locales/fr/menu.ts
@@ -8,6 +8,15 @@ export const menu: SimpleTranslationEntries = {
   "newGame": "Nouvelle partie",
   "selectGameMode": "Sélectionnez un mode de jeu.",
   "logInOrCreateAccount": "Connectez-vous ou créez un compte pour commencer. Aucun e-mail requis !",
+  "username": "Nom d'utilisateur",
+  "password": "Mot de passe",
+  "login": "Connexion",
+  "register": "S'inscrire",
+  "emptyUsername": "Le nom d'utilisateur ne doit pas être vide",
+  "invalidUsername": "Le nom d'utilisateur n'est pas valide",
+  "invalidPassword": "Le mot de passe n'est pas valide",
+  "accountNonExistent": "Le nom d'utilisateur n'existe pas",
+  "unmatchingPassword": "Le mot de passe n'est pas correct",
   "failedToLoadSaveData": "Échec du chargement des données. Veuillez recharger la page.\nSi cela continue, veuillez contacter l'administrateur.",
   "sessionSuccess": "Session chargée avec succès.",
   "failedToLoadSession": "Vos données de session n'ont pas pu être chargées.\nElles pourraient être corrompues.",
diff --git a/src/ui/login-form-ui-handler.ts b/src/ui/login-form-ui-handler.ts
index ce6a28b5290..d6a26f6d592 100644
--- a/src/ui/login-form-ui-handler.ts
+++ b/src/ui/login-form-ui-handler.ts
@@ -2,14 +2,15 @@ import { FormModalUiHandler } from "./form-modal-ui-handler";
 import { ModalConfig } from "./modal-ui-handler";
 import * as Utils from "../utils";
 import { Mode } from "./ui";
+import i18next from '../plugins/i18n';
 
 export default class LoginFormUiHandler extends FormModalUiHandler {
   getModalTitle(config?: ModalConfig): string {
-    return 'Login';
+    return i18next.t('menu:login');
   }
 
   getFields(config?: ModalConfig): string[] {
-    return [ 'Username', 'Password' ];
+    return [ i18next.t('menu:username'), i18next.t('menu:password') ];
   }
 
   getWidth(config?: ModalConfig): number {
@@ -21,7 +22,7 @@ export default class LoginFormUiHandler extends FormModalUiHandler {
   }
 
   getButtonLabels(config?: ModalConfig): string[] {
-    return [ 'Log In', 'Register' ];
+    return [ i18next.t('menu:login'), i18next.t('menu:register') ];
   }
 
   getReadableErrorMessage(error: string): string {
@@ -30,13 +31,13 @@ export default class LoginFormUiHandler extends FormModalUiHandler {
       error = error.slice(0, colonIndex);
     switch (error) {
       case 'invalid username':
-        return 'The provided username is invalid';
+        return i18next.t('menu:invalidUsername');
       case 'invalid password':
-        return 'The provided password is invalid';
+        return i18next.t('menu:invalidPassword');
       case 'account doesn\'t exist':
-        return 'The provided user does not exist';
+        return i18next.t('menu:accountNonExistent');
       case 'password doesn\'t match':
-        return 'The provided password does not match';
+        return i18next.t('menu:unmatchingPassword');
     }
 
     return super.getReadableErrorMessage(error);
@@ -57,7 +58,7 @@ export default class LoginFormUiHandler extends FormModalUiHandler {
           this.scene.ui.playError();
         };
         if (!this.inputs[0].text)
-          return onFail('Username must not be empty');
+          return onFail(i18next.t('menu:emptyUsername'));
         const contentType = 'application/x-www-form-urlencoded';
         const headers = {
           'Content-Type': contentType,