diff --git a/wagtail/wagtailembeds/embeds.py b/wagtail/wagtailembeds/embeds.py
index da13cb6c26..9d2f6fcdc7 100644
--- a/wagtail/wagtailembeds/embeds.py
+++ b/wagtail/wagtailembeds/embeds.py
@@ -15,9 +15,14 @@ from wagtail.wagtailembeds.oembed_providers import get_oembed_provider
 from wagtail.wagtailembeds.models import Embed
 
 
-class EmbedNotFoundException(Exception): pass
-class EmbedlyException(Exception): pass
-class AccessDeniedEmbedlyException(EmbedlyException): pass
+class EmbedNotFoundException(Exception):
+    pass
+
+class EmbedlyException(Exception):
+    pass
+
+class AccessDeniedEmbedlyException(EmbedlyException):
+    pass
 
 
 def embedly(url, max_width=None, key=None):