diff --git a/app/models/auth_source_ldap.rb b/app/models/auth_source_ldap.rb
index 1378d00..0a53550 100644
--- a/app/models/auth_source_ldap.rb
+++ b/app/models/auth_source_ldap.rb
@@ -37,7 +37,7 @@ class AuthSourceLdap < AuthSource
     
     if attrs.first && attrs.first[:dn] && authenticate_dn(attrs.first[:dn], password)
       logger.debug "Authentication successful for '#{login}'" if logger && logger.debug?
-      return attrs
+      return [] << attrs.first.except(:dn)
     end
   rescue  Net::LDAP::LdapError => text
     raise "LdapError: " + text
diff --git a/app/models/user.rb b/app/models/user.rb
index 496ca21..8a69fda 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -111,8 +111,7 @@ class User < Principal
       # user is not yet registered, try to authenticate with available sources
       attrs = AuthSource.authenticate(login, password)
       if attrs
-        attributes = *attrs
-        user = new(attributes.symbolize_keys.except(:dn))
+        user = new(*attrs)
         user.login = login
         user.language = Setting.default_language
         if user.save