diff --git a/lib/graphql/schema/validator/required_validator.rb b/lib/graphql/schema/validator/required_validator.rb
index 5ddf90e418..d5afbb2da1 100644
--- a/lib/graphql/schema/validator/required_validator.rb
+++ b/lib/graphql/schema/validator/required_validator.rb
@@ -35,7 +35,8 @@ class Validator
       #   end
       #
       class RequiredValidator < Validator
-        # @param one_of [Symbol, Array<Symbol>] An argument, or a list of arguments, that represents a valid set of inputs for this field
+        # @param one_of [Array<Symbol>] A list of arguments, exactly one of which is required for this field
+        # @param argument [Symbol] An argument that is required for this field
         # @param message [String]
         def initialize(one_of: nil, argument: nil, message: nil, **default_options)
           @one_of = if one_of