--- a/cubicweb/web/test/unittest_http_headers.py	Fri Jan 20 10:31:04 2017 +0100
+++ b/cubicweb/web/test/unittest_http_headers.py	Fri Jan 20 14:32:34 2017 +0100
@@ -13,6 +13,7 @@
         with self.assertRaises(ValueError):
             http_headers.generateTrueFalse('any value')
 
+
 if __name__ == '__main__':
     from unittest import main
     main()