diff --git a/test/irb/yamatanooroti/test_rendering.rb b/test/irb/yamatanooroti/test_rendering.rb
index b1653f353c..b1d52dd2e3 100644
--- a/test/irb/yamatanooroti/test_rendering.rb
+++ b/test/irb/yamatanooroti/test_rendering.rb
@@ -26,6 +26,7 @@ begin
     end
 
     def test_launch
+      # TODO Remove the disabling autocomplete after new versoin of reline gem is released.
       write_irbrc <<~'LINES'
         puts 'start IRB'
         IRB.conf[:USE_AUTOCOMPLETE] = false