diff --git a/core/kernel.rbs b/core/kernel.rbs
index b44fc9d8e..3299fe36a 100644
--- a/core/kernel.rbs
+++ b/core/kernel.rbs
@@ -2674,7 +2674,7 @@ module Kernel : BasicObject
   #     Object.new.nil?   #=> false
   #     nil.nil?          #=> true
   #
-  def nil?: () -> false
+  def nil?: () -> false # Overriden by NilClass#nil?
 
   # <!--
   #   rdoc-file=gc.c