diff --git a/lib/custom_wizard/validators/update.rb b/lib/custom_wizard/validators/update.rb
index d71bded1..869f7dca 100644
--- a/lib/custom_wizard/validators/update.rb
+++ b/lib/custom_wizard/validators/update.rb
@@ -128,7 +128,7 @@ class ::CustomWizard::UpdateValidator
     return @ctx if @ctx
 
     @ctx = PrettyText.v8
-    PrettyText.ctx_load(@ctx, "#{Rails.root}/vendor/assets/javascripts/moment.js")
+    @ctx.load("#{Rails.root}/vendor/assets/javascripts/moment.js")
     @ctx
   end
 end