diff --git a/rsconcept/backend/apps/users/messages.py b/rsconcept/backend/apps/users/messages.py
index a7ea4f94..f142f37a 100644
--- a/rsconcept/backend/apps/users/messages.py
+++ b/rsconcept/backend/apps/users/messages.py
@@ -3,7 +3,7 @@
 
 
 def passwordAuthFailed():
-    return 'Неизвестное сочетание имени пользователя и пароля'
+    return 'Неизвестное сочетание имени пользователя (email) и пароля'
 
 
 def passwordsNotMatch():
diff --git a/rsconcept/backend/apps/users/serializers.py b/rsconcept/backend/apps/users/serializers.py
index 519f74d6..2843f832 100644
--- a/rsconcept/backend/apps/users/serializers.py
+++ b/rsconcept/backend/apps/users/serializers.py
@@ -1,6 +1,4 @@
 ''' Serializers: User profile and Authorization. '''
-from urllib import request
-
 from django.contrib.auth import authenticate
 from django.contrib.auth.password_validation import validate_password
 from rest_framework import serializers
@@ -32,19 +30,27 @@ class LoginSerializer(serializers.Serializer):
     )
 
     def validate(self, attrs):
-        username = attrs.get('username')
-        password = attrs.get('password')
-        user = authenticate(
+        username = attrs['username']
+        if '@' in username:
+            user = models.User.objects.filter(email=username)
+            if not user.exists() or user.count() > 1:
+                raise serializers.ValidationError(
+                    msg.passwordAuthFailed(),
+                    code='authorization'
+                )
+            username = user.first().username
+        password = attrs['password']
+        authenticated = authenticate(
             request=self.context.get('request'),
             username=username,
             password=password
         )
-        if not user:
+        if not authenticated:
             raise serializers.ValidationError(
                 msg.passwordAuthFailed(),
                 code='authorization'
             )
-        attrs['user'] = user
+        attrs['user'] = authenticated
         return attrs
 
 
diff --git a/rsconcept/backend/apps/users/tests/t_views.py b/rsconcept/backend/apps/users/tests/t_views.py
index cc7f51b2..6b7d40de 100644
--- a/rsconcept/backend/apps/users/tests/t_views.py
+++ b/rsconcept/backend/apps/users/tests/t_views.py
@@ -22,6 +22,10 @@ class TestUserAPIViews(EndpointTester):
         self.executeAccepted(data)
         self.executeAccepted(data)
 
+        self.logout()
+        data = {'username': self.user.email, 'password': 'password'}
+        self.executeAccepted(data)
+
 
     @decl_endpoint('/users/api/logout', method='post')
     def test_logout(self):
diff --git a/rsconcept/frontend/src/pages/LoginPage.tsx b/rsconcept/frontend/src/pages/LoginPage.tsx
index e422373c..ece4bd3c 100644
--- a/rsconcept/frontend/src/pages/LoginPage.tsx
+++ b/rsconcept/frontend/src/pages/LoginPage.tsx
@@ -69,7 +69,7 @@ function LoginPage() {
         <img alt='Концепт Портал' src={resources.logo} className='max-h-[2.5rem] min-w-[2.5rem] mb-3' />
         <TextInput
           id='username'
-          label='Имя пользователя'
+          label='Логин или email'
           autoComplete='username'
           autoFocus
           required