diff --git a/backend/application/api_functions.py b/backend/application/api_functions.py
index 7d673ce..742b5b6 100644
--- a/backend/application/api_functions.py
+++ b/backend/application/api_functions.py
@@ -35,8 +35,7 @@ def db_login(ip, email, password):
     hash_pass = hash_password(salt, password)
 
     user = Users.query\
-        .filter(Users.email == email)\
-        .filter(Users.hash_pass == hash_pass)\
+        .filter(Users.email == email, Users.hash_pass == hash_pass)\
         .first()
 
     if not user:
@@ -73,7 +72,7 @@ def db_login(ip, email, password):
 
 def db_register(ip, email, login, password, is_admin):
     user = Users.query.filter(
-        Users.email == email or Users.login == login
+        Users.email == email
     ).first()
     if user:
         message = f'{email} ({login}) already exist.'
diff --git a/backend/application/users_model.py b/backend/application/users_model.py
index e90e778..15bac2a 100644
--- a/backend/application/users_model.py
+++ b/backend/application/users_model.py
@@ -4,16 +4,14 @@ from . import db
 class Users(db.Model):
     __bind_key__ = 'flaskaled-srv1'
 
-    id = db.Column(db.Integer, primary_key=True)
-    email = db.Column(db.String(), nullable=False)
-    login = db.Column(db.String(), nullable=False)
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    email = db.Column(db.String(), nullable=False, unique=True)
     hash_pass = db.Column(db.LargeBinary(), nullable=False)
     salt = db.Column(db.LargeBinary(), nullable=False)
     is_admin = db.Column(db.Boolean, default=False, nullable=False)
 
-    def __init__(self, email, login, hash_pass, salt, is_admin):
+    def __init__(self, email, hash_pass, salt, is_admin):
         self.email = email
-        self.login = login
         self.hash_pass = hash_pass
         self.salt = salt
         self.is_admin = is_admin
@@ -22,7 +20,6 @@ class Users(db.Model):
         return {
             'id': self.id,
             'email': self.email,
-            'login': self.login,
             'hash_pass': self.hash_pass,
             'salt': self.salt,
             'is_admin': self.is_admin
@@ -32,7 +29,6 @@ class Users(db.Model):
         return {
             'id': self.id,
             'email': self.email,
-            'login': self.login,
             'is_admin': self.is_admin
         }
 
diff --git a/backend/init-db1.sql b/backend/init-db1.sql
index 06f6d2e..d3b2426 100644
--- a/backend/init-db1.sql
+++ b/backend/init-db1.sql
@@ -4,7 +4,6 @@ CREATE TABLE IF NOT EXISTS users
 (
     id serial PRIMARY KEY,
     email character varying(320) NOT NULL,
-    login character varying(32) NOT NULL,
     hash_pass bytea NOT NULL,
     salt bytea NOT NULL,
     is_admin boolean NOT NULL DEFAULT FALSE