diff --git a/wagtail/admin/mail.py b/wagtail/admin/mail.py
index a23f5695c1..53e499b9bf 100644
--- a/wagtail/admin/mail.py
+++ b/wagtail/admin/mail.py
@@ -230,7 +230,7 @@ class EmailNotificationMixin:
         sent_count = 0
         try:
             with OpenedConnection(connection) as open_connection:
-            
+
                 # Send emails
                 for recipient in recipients:
                     try:
diff --git a/wagtail/core/workflows.py b/wagtail/core/workflows.py
index a6967d233d..5c63499137 100644
--- a/wagtail/core/workflows.py
+++ b/wagtail/core/workflows.py
@@ -3,6 +3,7 @@ from wagtail.core.models import Task
 
 TASK_TYPES = []
 
+
 def get_concrete_descendants(model_class, inclusive=True):
     """Retrieves non-abstract descendants of the given model class. If `inclusive` is set to
     True, includes model_class"""