diff --git a/lib/react_on_rails/configuration.rb b/lib/react_on_rails/configuration.rb
index 62de0885f..6488b0814 100644
--- a/lib/react_on_rails/configuration.rb
+++ b/lib/react_on_rails/configuration.rb
@@ -9,7 +9,7 @@ def self.configure
   DEFAULT_GENERATED_ASSETS_DIR = File.join(%w[public webpack], Rails.env).freeze
   DEFAULT_SERVER_RENDER_TIMEOUT = 20
   DEFAULT_POOL_SIZE = 1
-  DEFAULT_RANDOM_DOM_ID = TRUE # for backwards compatability
+  DEFAULT_RANDOM_DOM_ID = true # for backwards compatability
 
   def self.configuration
     @configuration ||= Configuration.new(