diff --git a/src/enum.cr b/src/enum.cr
index a405cac63e3c..0f8d8c22d9a0 100644
--- a/src/enum.cr
+++ b/src/enum.cr
@@ -237,6 +237,8 @@ struct Enum
     value <=> other.value
   end
 
+  # TODO: Remove `#==` after release next version. It is no longer needed.
+
   # :nodoc:
   def ==(other)
     false