diff --git a/app/models/fluentd/setting/config.rb b/app/models/fluentd/setting/config.rb
index 6cc0b2c..ed5ba74 100644
--- a/app/models/fluentd/setting/config.rb
+++ b/app/models/fluentd/setting/config.rb
@@ -3,26 +3,26 @@ require 'fluent/config'
 class Fluentd
   module Setting
     class Config
-      attr_reader :config, :file
+      attr_reader :fl_config, :file
+      delegate :elements, :to_s, to: :fl_config
 
       def initialize(config_file)
-        config = Fluent::Config.parse(IO.read(config_file), config_file, nil, true)
-        @config = config
+        @fl_config = Fluent::Config.parse(IO.read(config_file), config_file, nil, true)
         @file = config_file
       end
 
       def empty?
-        config.elements.length.zero?
+        elements.length.zero?
       end
 
       def sources
-        config.elements.find_all do |elm|
+        elements.find_all do |elm|
           elm.name == "source"
         end
       end
 
       def matches
-        config.elements.find_all do |elm|
+        elements.find_all do |elm|
           elm.name == "match"
         end
       end