diff --git a/src/@arima/arima.m b/src/@arima/arima.m
index dc6dd5d92ab642d56b201c1354e4d33cbd1197d3..7cb4414cc2cb41f9d7b05e3fc1e3d196ee6b5f93 100644
--- a/src/@arima/arima.m
+++ b/src/@arima/arima.m
@@ -2,7 +2,7 @@ classdef arima<handle % --*-- Unitary tests --*--
 
 % Class for ARIMA models (interface to X13).
 
-% Copyright (C) 2017 Dynare Team
+% Copyright (C) 2017-2022 Dynare Team
 %
 % This code is free software: you can redistribute it and/or modify
 % it under the terms of the GNU General Public License as published by
@@ -48,7 +48,6 @@ methods
         %
         % OUPUTS
         % - o      [arima]      ARIMA model object.
-        nargin
         switch nargin
           case 0
             % Return empty object.