diff --git a/lib/bcdice/game_system/Arianrhod_Korean.rb b/lib/bcdice/game_system/Arianrhod_Korean.rb
index 5fffb8c07..b2928814f 100644
--- a/lib/bcdice/game_system/Arianrhod_Korean.rb
+++ b/lib/bcdice/game_system/Arianrhod_Korean.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "bcdice/game_system/Arianrhod"
+
 module BCDice
   module GameSystem
     class Arianrhod_Korean < Arianrhod