diff --git a/rhodecode/tests/lib/test_libs.py b/rhodecode/tests/lib/test_libs.py
--- a/rhodecode/tests/lib/test_libs.py
+++ b/rhodecode/tests/lib/test_libs.py
@@ -27,6 +27,7 @@ import datetime
 import string
 import mock
 import pytest
+import functools
 
 from rhodecode.tests import no_newline_id_generator
 from rhodecode.tests.utils import run_test_concurrently
@@ -87,7 +88,7 @@ def test_str2bool(str_bool, expected):
     assert str2bool(str_bool) == expected
 
 
-@pytest.mark.parametrize("text, expected", reduce(lambda a1,a2:a1+a2, [
+@pytest.mark.parametrize("text, expected", functools.reduce(lambda a1, a2: a1+a2, [
 [
 (pref+"", []),
 (pref+"Hi there @marcink", ['marcink']),
@@ -374,6 +375,9 @@ def test_gravatar_url_builder(tmpl_url, 
         ('admin@rhodecode.com', '', 'Kuzminski', 'AK', '#104036'),  # em+ln
         # non-ascii
         ('admin@rhodecode.com', 'Marcin', 'Śuzminski', 'MS', '#104036'),
+        ('admin@rhodecode.com', 'Łukasz', 'Śuzminski', 'LS', '#104036'),
+        ('admin@rhodecode.com', 'Fabian', 'Łukaszewski', 'FL', '#104036'),
+
         ('marcin.śuzminski@rhodecode.com', '', '', 'MS', '#73000f'),
 
         # special cases, LDAP can provide those...