diff --git a/trytond/protocols/webdav.py b/trytond/protocols/webdav.py
index 4280582b05..49468d68a7 100644
--- a/trytond/protocols/webdav.py
+++ b/trytond/protocols/webdav.py
@@ -100,7 +100,7 @@ class SecureThreadedHTTPServer(BaseThreadedHTTPServer):
 class WebDAVServerThread(daemon):
 
     def __init__(self, interface, port, secure=False):
-        daemon.__init__(self, interface, port, secure, 
+        daemon.__init__(self, interface, port, secure,
                 name='WebDAVServerThread')
         if self.secure:
             handler_class = SecureWebDAVAuthRequestHandler