diff --git a/pywb/rewrite/test/test_html_rewriter.py b/pywb/rewrite/test/test_html_rewriter.py
index d8087555..49294d91 100644
--- a/pywb/rewrite/test/test_html_rewriter.py
+++ b/pywb/rewrite/test/test_html_rewriter.py
@@ -126,7 +126,7 @@ r"""
# srcset attrib
>>> parse('
')
-
+
# empty srcset attrib
>>> parse('
')