diff --git a/app/errors/api/v1/granblue_error.rb b/app/errors/api/v1/granblue_error.rb
index dec43a1..e2d0c70 100644
--- a/app/errors/api/v1/granblue_error.rb
+++ b/app/errors/api/v1/granblue_error.rb
@@ -4,7 +4,7 @@ module Api
   module V1
     # This is the base error that we inherit from for application errors
     class GranblueError < StandardError
-      def initialize(data)
+      def initialize(data = '')
         @data = data
       end