diff --git a/src/@dates/strings.m b/src/@dates/strings.m
index b872e55591d28e5cc9a2bd36e5fa5faa8e8773b6..1ffefa979120d0c02c2f3fb409327514cc804ce4 100644
--- a/src/@dates/strings.m
+++ b/src/@dates/strings.m
@@ -8,7 +8,7 @@ function m = strings(o) % --*-- Unitary tests --*--
 % OUTPUTS
 % - m [cell of char] object with n elements.
 
-% Copyright (C) 2013-2020 Dynare Team
+% Copyright © 2013-2020 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