diff --git a/frontend/src/sagas/auth.sagas.js b/frontend/src/sagas/auth.sagas.js
index da7d2e2..a2df936 100644
--- a/frontend/src/sagas/auth.sagas.js
+++ b/frontend/src/sagas/auth.sagas.js
@@ -2,6 +2,8 @@ import { call, put } from 'redux-saga/effects';
 import { loginFailure, loginSuccess, logoutFailure, logoutSuccess } from '../actions/auth.actions';
 import { addMessage } from '../actions/message.actions';
 import { APIClient } from '../services/api-client.service.js';
+import { UnauthorizedError } from '../errors/unauthorized.error.js';
+
 
 export function* loginSaga(action) {
     const client = new APIClient();
@@ -9,10 +11,14 @@ export function* loginSaga(action) {
     try {
         result = yield call(client.login, action.username, action.password);
     } catch(err) {
-        console.error(err);
+	if (err instanceof UnauthorizedError) {
+        	yield put(addMessage('warning', "Identifiants invalides."));
+		return;
+	}
+
         yield put(loginFailure(action.username, err));
         yield put(addMessage('danger', "Une erreur inconnue bloque le fonctionnement normal de l'application. Veuillez réessayer plus tard."));
-        return
+	return
     }
 
     if ('error' in result) {