diff --git a/rhodecode/model/db.py b/rhodecode/model/db.py
--- a/rhodecode/model/db.py
+++ b/rhodecode/model/db.py
@@ -105,7 +105,7 @@ class User(Base, BaseModel):
     lastname = Column("lastname", String(length=None, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     email = Column("email", String(length=None, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     last_login = Column("last_login", DateTime(timezone=False), nullable=True, unique=None, default=None)
-    is_ldap = Column("is_ldap", Boolean(), nullable=False, unique=None, default=False)
+    ldap_dn = Column("ldap_dn", String(length=None, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
     user_log = relationship('UserLog', cascade='all')
     user_perms = relationship('UserToPerm', primaryjoin="User.user_id==UserToPerm.user_id", cascade='all')