diff --git a/geotrek/common/urls.py b/geotrek/common/urls.py
index 0d6feed8c2..0a1d5dc663 100644
--- a/geotrek/common/urls.py
+++ b/geotrek/common/urls.py
@@ -3,6 +3,7 @@
 
 from . import views
 
+
 class LangConverter(converters.StringConverter):
     regex = '[a-z]{2}'
 
@@ -25,7 +26,7 @@ class LangConverter(converters.StringConverter):
 class PublishableEntityOptions(MapEntityOptions):
     document_public_view = views.DocumentPublic
     document_public_booklet_view = views.DocumentBookletPublic
-    markup_public_view =views.MarkupPublic
+    markup_public_view = views.MarkupPublic
 
     def scan_views(self, *args, **kwargs):
         """ Adds the URLs of all views provided by ``PublishableMixin`` models.