diff --git a/tests/utils/test_urlutils.py b/tests/utils/test_urlutils.py
index d43d806e0..cb07ca80e 100644
--- a/tests/utils/test_urlutils.py
+++ b/tests/utils/test_urlutils.py
@@ -534,13 +534,13 @@ class TestIncDecNumber:
         ("http://foo.bar/folder_1/image_2", "increment", "http://foo.bar/folder_1/image_3"),
         ("http://bbc.c0.uk:80/story_1", "increment", "http://bbc.c0.uk:80/story_2"),
         ("http://mydomain.tld/1_%C3%A4", "increment", "http://mydomain.tld/2_%C3%A4"),
-        ("http://example.com/site/5#5", "increment", "http://example.com/site/6#5"), 
+        ("http://example.com/site/5#5", "increment", "http://example.com/site/6#5"),
 
         ("http://example.com/index10.html", "decrement", "http://example.com/index9.html"),
         ("http://foo.bar/folder_1/image_3", "decrement", "http://foo.bar/folder_1/image_2"),
         ("http://bbc.c0.uk:80/story_1", "decrement", "http://bbc.c0.uk:80/story_0"),
         ("http://mydomain.tld/2_%C3%A4", "decrement", "http://mydomain.tld/1_%C3%A4"),
-        ("http://example.com/site/5#5", "decrement", "http://example.com/site/4#5"), 
+        ("http://example.com/site/5#5", "decrement", "http://example.com/site/4#5"),
     ])
     def test_incdec_number(self, url, incdec, output):
         """Test incdec_number with valid URLs."""