diff --git a/app/lib/world/errors.coffee b/app/lib/world/errors.coffee
index c4eee90e7..c766d76a6 100644
--- a/app/lib/world/errors.coffee
+++ b/app/lib/world/errors.coffee
@@ -3,7 +3,7 @@ Vector = require './vector'
 module.exports.ArgumentError = class ArgumentError extends Error
   @className: 'ArgumentError'
   constructor: (@message, @functionName, @argumentName, @intendedType, @actualValue, @numArguments, @hint) ->
-    super message
+    super @message
     @name = 'ArgumentError'
     if Error.captureStackTrace?
       Error.captureStackTrace @, @constructor