diff --git a/management/univention-self-service/python/passwordreset.py b/management/univention-self-service/python/passwordreset.py
index 3693b98..33f83d2 100644
--- a/management/univention-self-service/python/passwordreset.py
+++ b/management/univention-self-service/python/passwordreset.py
@@ -54,10 +54,7 @@ def get_connection(self):
 		except (OSError, IOError) as exc:
 			self.log('Could not read UMC server credentials: %s' % (exc,))
 			raise cherrypy.HTTPError(503, 'Could not authenticate at Univention Management Console service.')
-		status, response = connection.auth({'username': username, 'password': password})
-		if status != 200:
-			self.log('Authentication failed: %r' % (response,))
-			raise cherrypy.HTTPError(503, 'Could not authenticate at Univention Management Console service: %s' % (format_status(status),))
+		connection._headers['Authorization'] = 'basic %s' % ('%s:%s' % (username, password)).encode('base64').rstrip()
 		return connection
 
 	def umc_request(self, url, data):