diff --git a/client-barcode/freitagslib/network.py b/client-barcode/freitagslib/network.py
index 0cf9b9b..ec7f60c 100644
--- a/client-barcode/freitagslib/network.py
+++ b/client-barcode/freitagslib/network.py
@@ -10,6 +10,7 @@ import urllib2
 import simplejson as json
 from decimal import Decimal
 import os
+import base64
 
 if __name__ == '__main__':
 	import sys
@@ -24,14 +25,8 @@ DEPOSIT_BANK = 2
 
 _BASE_URL = 'http://devcat.someserver.de:13805/api2/'
 
-
-def _make_auth_opener(username, password):
-	password_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
-	password_mgr.add_password(None, _BASE_URL, username, password)
-	handler = urllib2.HTTPBasicAuthHandler(password_mgr)
-	return urllib2.build_opener(handler)
-	
-_auth_opener = _make_auth_opener(os.environ['BARCODE_PLUGIN_USER'], os.environ['BARCODE_PLUGIN_PASS'])
+_auth = base64.encodestring('%s:%s' % (os.environ['BARCODE_PLUGIN_USER'], os.environ['BARCODE_PLUGIN_PASS'])).rstrip()
+_headers = {'Authorization':'Basic %s' % _auth}
 
 
 def _request(api_rel_url, para_map, method):
@@ -40,13 +35,13 @@ def _request(api_rel_url, para_map, method):
 
 	if method == 'GET':
 		url = '%s?%s' % (url, data)
-		req = urllib2.Request(url)
+		req = urllib2.Request(url, headers=_headers)
 	elif method == 'POST':
-		req = urllib2.Request(url, data)
+		req = urllib2.Request(url, data=data, headers=_headers)
 	else:
 		raise ValueError('Unsupported method "%s"' % method)
 
-	response = _auth_opener.open(req)
+	response = urllib2.urlopen(req)
 	return response.read()