lib/sass/plugin/rack.rb in haml-edge-2.3.81 vs lib/sass/plugin/rack.rb in haml-edge-2.3.82

@@ -52,10 +52,10 @@
             Haml::Util.has?(:instance_method, Merb::Rack::Application, :call_without_sass)
           Merb::Rack::Application.instance_eval {alias_method :call, :call_without_sass}
         end
 
         if defined?(ActionDispatch::Callbacks.to_prepare)
-          ActionDispatch::Callbacks.instance_eval {undef :__sass_process}
+          ActionDispatch::Callbacks.skip_callback(:prepare, :__sass_process)
         elsif defined?(ActionController::Base) &&
             Haml::Util.has?(:instance_method, ActionController::Base, :sass_old_process)
           ActionController::Base.instance_eval {alias_method :process, :sass_old_process}
         end
       end