diff --git a/webservice/models.py b/webservice/models.py
index 6ce55ec..23e0fe4 100644
--- a/webservice/models.py
+++ b/webservice/models.py
@@ -7,7 +7,7 @@ class User(db.Model):
     password = db.Column('password', db.String(255), nullable=False, server_default='')
     user_id = db.Column('user_id', db.Integer(), nullable=False)
     telegram_name = db.Column('telegram_name', db.String(255), nullable=True, server_default='')
-    admin = db.Column('admin', db.Boolean(), server_default="false")
+    admin = db.Column('admin', db.Boolean(), server_default=False)
 
 
 class Transaction(db.Model):