diff --git a/lib/sso.rb b/lib/sso.rb
index bf55430cb..5301788b6 100644
--- a/lib/sso.rb
+++ b/lib/sso.rb
@@ -22,20 +22,6 @@ returns
       {
         adapter: 'Sso::Env',
       },
-      {
-        adapter: 'Sso::Otrs',
-        required_group_ro: 'stats',
-        group_rw_role_map: {
-          'admin' => 'Admin',
-          'stats' => 'Report',
-        },
-        group_ro_role_map: {
-          'stats' => 'Report',
-        },
-        always_role: {
-          'Agent' => true,
-        },
-      },
     ]
 
     # added configured backends
diff --git a/lib/sso/otrs.rb b/lib/sso/otrs.rb
deleted file mode 100644
index b97a0a5e6..000000000
--- a/lib/sso/otrs.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-# Copyright (C) 2012-2013 Zammad Foundation, http://zammad-foundation.org/
-
-module Sso::Otrs
-  def self.check( params, _config_item )
-
-    endpoint = Setting.get('import_otrs_endpoint')
-    return false if !endpoint
-    return false if endpoint.empty?
-    return false if endpoint == 'http://otrs_host/otrs'
-    return false if !params['SessionID']
-
-    # connect to OTRS
-    result = Import::OTRS.session( params['SessionID'] )
-
-    return false if !result
-    return false if !result['groups_ro']
-    return false if !result['groups_rw']
-    return false if !result['user']
-
-    user = User.where( login: result['user']['UserLogin'], active: true ).first
-
-    if !user
-      Rails.logger.info "No such user #{result['user']['UserLogin']}, requested for SSO!"
-      return
-    end
-
-    user
-  end
-end