diff --git a/lib/dry/validation/config.rb b/lib/dry/validation/config.rb
index 1057a677..c88246f4 100644
--- a/lib/dry/validation/config.rb
+++ b/lib/dry/validation/config.rb
@@ -12,12 +12,15 @@ module Validation
     #
     # @api public
     class Config < Schema::Config
-      if Dry::Configurable::VERSION < "0.13"
-        setting :macros, Macros::Container.new, constructor: :dup.to_proc
-      else
-        setting :macros, default: Macros::Container.new, constructor: :dup.to_proc
+      unless Dry::Configurable::VERSION < "0.13"
+        def self.setting(name, default = Undefined, **opts, &block)
+          return super if default.equal?(Undefined)
+          super(name, **opts.merge(default: default), &block)
+        end
       end
 
+      setting :macros, Macros::Container.new, constructor: :dup.to_proc
+
       # @api private
       def dup
         config = super