diff --git a/lib/topic_view.rb b/lib/topic_view.rb
index 625c9ef4337..8020ba72de2 100644
--- a/lib/topic_view.rb
+++ b/lib/topic_view.rb
@@ -195,7 +195,11 @@ class TopicView
 
   def published_time
     return nil if desired_post.blank?
-    desired_post.created_at.strftime('%FT%T%:z')
+    if desired_post.wiki && desired_post.post_number == 1 && desired_post.revisions.size > 0
+      desired_post.revisions.last.updated_at.strftime('%FT%T%:z')
+    else
+      desired_post.created_at.strftime('%FT%T%:z')
+    end
   end
 
   def image_url