diff --git a/app/helpers/diff_helper.rb b/app/helpers/diff_helper.rb
index f9bacc8ba45ee102dc82c7c139e7fcdb5335fc16..6a3ab3ea40a444ad06b5830945e48c6ceadd54dc 100644
--- a/app/helpers/diff_helper.rb
+++ b/app/helpers/diff_helper.rb
@@ -69,7 +69,7 @@ module DiffHelper
   end
 
   def line_comments
-    @line_comments ||= @line_notes.select(&:active?).group_by(&:line_code)
+    @line_comments ||= @line_notes.select(&:active?).sort_by(&:created_at).group_by(&:line_code)
   end
 
   def organize_comments(type_left, type_right, line_code_left, line_code_right)