1 files changed, 3 insertions, 3 deletions
diff --git a/actionpack/lib/action_controller/dispatcher.rb b/actionpack/lib/action_controller/dispatcher.rb
index 835d8e834e..bdae5f9d86 100644
--- a/actionpack/lib/action_controller/dispatcher.rb
+++ b/actionpack/lib/action_controller/dispatcher.rb
@@ -24,7 +24,7 @@ module ActionController
           to_prepare(:activerecord_instantiate_observers) { ActiveRecord::Base.instantiate_observers }
         end
 
-        after_dispatch :flush_logger if defined?(RAILS_DEFAULT_LOGGER) && RAILS_DEFAULT_LOGGER.respond_to?(:flush)
+        after_dispatch :flush_logger if Base.logger && Base.logger.respond_to?(:flush)
       end
 
       # Backward-compatible class method takes CGI-specific args. Deprecated
@@ -44,7 +44,7 @@ module ActionController
       def to_prepare(identifier = nil, &block)
         @prepare_dispatch_callbacks ||= ActiveSupport::Callbacks::CallbackChain.new
         callback = ActiveSupport::Callbacks::Callback.new(:prepare_dispatch, block, :identifier => identifier)
-        @prepare_dispatch_callbacks | callback
+        @prepare_dispatch_callbacks.replace_or_append!(callback)
       end
 
       # If the block raises, send status code as a last-ditch response.
@@ -142,7 +142,7 @@ module ActionController
     end
 
     def flush_logger
-      RAILS_DEFAULT_LOGGER.flush
+      Base.logger.flush
     end
 
     protected