diff --git a/dav_events/templatetags/dav_events.py b/dav_events/templatetags/dav_events.py
index 1296200..f5731f2 100644
--- a/dav_events/templatetags/dav_events.py
+++ b/dav_events/templatetags/dav_events.py
@@ -20,7 +20,7 @@ def render_event_status(event, show_void=True):
     for status in status_list:
         if isinstance(status, EventStatus):
             label = status.label
-            context = status.bootstrap_context
+            context = status.bootstrap_context or 'default'
         else:
             label = status.get('label')
             context = status.get('bootstrap_context', 'default')