diff --git a/gramps/plugins/webreport/basepage.py b/gramps/plugins/webreport/basepage.py
index 5a14898a60..57efc57927 100644
--- a/gramps/plugins/webreport/basepage.py
+++ b/gramps/plugins/webreport/basepage.py
@@ -95,7 +95,7 @@
 from gramps.gen.utils.db import (
     get_birth_or_fallback,
     get_death_or_fallback,
-    find_witnessed_people
+    find_witnessed_people,
 )
 from gramps.gen.datehandler import parser as _dp
 from gramps.plugins.lib.libhtml import Html, xml_lang
@@ -948,10 +948,10 @@ def display_event_row(
                             "p",
                             _("(%(str1)s) %(str2)s")
                             % {
-                                "str1" : Html(
+                                "str1": Html(
                                     "b", witnessed_person_event_ref.get_role()
                                 ),
-                                "str2" : witnessed_person_name,
+                                "str2": witnessed_person_name,
                             },
                         )
                     )