diff --git a/app/models/post_archive.rb b/app/models/post_archive.rb
index f32fc2ad9..0633d77af 100644
--- a/app/models/post_archive.rb
+++ b/app/models/post_archive.rb
@@ -31,7 +31,7 @@ class PostArchive < ActiveRecord::Base
         tags: version.tags,
         added_tags: added_tags,
         removed_tags: removed_tags,
-        updater_id: version.updater_id],
+        updater_id: version.updater_id,
         updater_ip_addr: version.updater_ip_addr.to_s,
         created_at: version.created_at,
         updated_at: version.updated_at,