diff --git a/config/core_ext/legacy-prototype_helper.rb b/config/core_ext/legacy-prototype_helper.rb
index 7db5b973..9b931202 100644
--- a/config/core_ext/legacy-prototype_helper.rb
+++ b/config/core_ext/legacy-prototype_helper.rb
@@ -649,7 +649,7 @@ module ActionView
   end
 
   # Converts chained method calls on DOM proxy elements into JavaScript chains
-  class JavaScriptProxy < ActiveSupport::ProxyObject # :nodoc:
+  class JavaScriptProxy < ::BasicObject # :nodoc:
     def initialize(generator, root = nil)
       @generator = generator
       @generator << root if root