diff --git a/app/presenters/document_collection_presenter.rb b/app/presenters/document_collection_presenter.rb
index b8901e3e7..e34f39eda 100644
--- a/app/presenters/document_collection_presenter.rb
+++ b/app/presenters/document_collection_presenter.rb
@@ -51,7 +51,8 @@ def group_document_links(group, group_index)
 
   def group_heading(group)
     title = group["title"]
-    content_tag :h3, title, class: "group-title", id: group_title_id(title)
+    heading_level = show_contents_list? ? :h3 : :h2
+    content_tag heading_level, title, class: "group-title", id: group_title_id(title)
   end
 
 private