1 files changed, 1 insertions, 1 deletions
diff --git a/helpers.rb b/helpers.rb
index 94ec2e1..6812a83 100644
--- a/helpers.rb
+++ b/helpers.rb
@@ -12,7 +12,7 @@ helpers do
     activity_path = File.join(box[:dir], activity_rel_path)
     if box == OUTBOX
       activity['id'] = File.join(box[:url], activity_rel_path)
-      activity['object']['published'] = date
+      activity['object']['published'] = date unless activity['object'].is_a? String
     end
     # save object
     save_object activity['object'], box if activity['object'] && activity['object']['type'] && !activity['object']['id']