diff --git a/src/build_report_summary.m b/src/build_report_summary.m
index d6a5e37254fe4ced2a429e3044d3abab269bc35b..1f76cc3519879c59a401fb534c81238024ec0b9d 100644
--- a/src/build_report_summary.m
+++ b/src/build_report_summary.m
@@ -10,7 +10,7 @@ function str = build_report_summary(reportfile, printonscreen, mailreport)
 % OUTPUTS
 % - str [string] Report summary.
 
-% Copyright (C) 2013-2018 Dynare Team
+% Copyright © 2013-2018 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/dassert.m b/src/dassert.m
index 686ffe55d3f704f4ecd49a610a8d1827afa4ed57..a7ce4444dcf9e4365ef1f470e93567c36a46e99a 100644
--- a/src/dassert.m
+++ b/src/dassert.m
@@ -2,7 +2,7 @@ function t = dassert(A,B,tol)
 
 % This function tests the equality of two objects.
 
-% Copyright (C) 2011-2020 Dynare Team
+% Copyright © 2011-2020 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/display_report.m b/src/display_report.m
index cfe343b2fe6027768a1a3720794674132bfcb40b..c23ab876ae4d739384dc4862340c7e98289386b5 100644
--- a/src/display_report.m
+++ b/src/display_report.m
@@ -8,7 +8,7 @@ function display_report(r)
 % OUTPUTS
 % none
 
-% Copyright (C) 2018 Dynare Team
+% Copyright © 2018 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/src/dtest.m b/src/dtest.m
index 226b2ce9fcb3d4e3e9059eedb1704b75738d09f6..2d1a76fb14e08a2d336a0d107cd0fbac5a9056e6 100644
--- a/src/dtest.m
+++ b/src/dtest.m
@@ -18,7 +18,7 @@ function dtest(fun, tpath)
 %
 % See also mtest
 
-% Copyright (C) 2011-2017 Dynare Team
+% Copyright © 2011-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/get_directory_description.m b/src/get_directory_description.m
index 427bb05fc6b15d705b05ec5e8ec2136d879ad793..4039fddf993a40aaa609123d9029938c65061830 100644
--- a/src/get_directory_description.m
+++ b/src/get_directory_description.m
@@ -8,7 +8,7 @@ function flist = get_directory_description(basedir)
 % OUTPUTS
 %  - flist   [cell of strings], the files under basedir (and subfolders).
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/initialize_unit_tests_toolbox.m b/src/initialize_unit_tests_toolbox.m
index 88327233eaa12e289722e1a0bd4cf9a9898d46fa..5b6b527b2f3a845552acaadc1393ef5c1d5a4a82 100644
--- a/src/initialize_unit_tests_toolbox.m
+++ b/src/initialize_unit_tests_toolbox.m
@@ -1,4 +1,4 @@
-% Copyright (C) 2014-2017 Dynare Team
+% Copyright © 2014-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/is_unitary_test_available.m b/src/is_unitary_test_available.m
index b208492723991fa58c0cc2ff5bd2264ef9c0c360..fc18b5dacd2a6ea0cb39b6ea0255b47c60b69dc0 100644
--- a/src/is_unitary_test_available.m
+++ b/src/is_unitary_test_available.m
@@ -9,7 +9,7 @@ function info = is_unitary_test_available(fun)
 % OUTPUTS
 %  - info [integer], scalar equal to 1 if unitary tests must be run, 0 otherwise.
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/missing/isoctave/isoctave.m b/src/missing/isoctave/isoctave.m
index 7f6ac8fb0e1d40be57d75cd61d40cfabce87b56c..db1d87850d33ba171c0dd78e0a39fbb705e521e7 100644
--- a/src/missing/isoctave/isoctave.m
+++ b/src/missing/isoctave/isoctave.m
@@ -2,7 +2,7 @@ function l = isoctave()
 
 % Tests if Octave is used.
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 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
diff --git a/src/missing/skipline/skipline.m b/src/missing/skipline/skipline.m
index 575787dadb5cb3571be23c52d374dadefd9116e9..a1708d6852f9fcfd144fbfe0d56af37543b75ec5 100644
--- a/src/missing/skipline/skipline.m
+++ b/src/missing/skipline/skipline.m
@@ -10,7 +10,7 @@ function skipline(n, fid)
 %   None
 %
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/src/mtest.m b/src/mtest.m
index 50634c41d0affe4241e6bd8a043a6fb7ab151bdb..a666c51073b0a51275425c1545a069e898c5e30f 100644
--- a/src/mtest.m
+++ b/src/mtest.m
@@ -24,7 +24,7 @@ function [check, info] = mtest(fname, fpath)
 %  - If two input arguments are provided, fname is the base name of the targeted
 %    matlab routine and fpath is the path to this routine.
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %
diff --git a/src/run_unitary_tests.m b/src/run_unitary_tests.m
index 0232a320ae165c9ed4525f3ea33c3702fd85c051..6f4920df12255f1b637125b4631253d84fc028bb 100644
--- a/src/run_unitary_tests.m
+++ b/src/run_unitary_tests.m
@@ -14,7 +14,7 @@ function [report, time] = run_unitary_tests(listoffiles)
 %
 % See also get_directory_description, mtest
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/src/run_unitary_tests_in_directory.m b/src/run_unitary_tests_in_directory.m
index da210db7df18afa37ca888e6387cfc163f72c086..9855345a3d741ed49f922d52ad91464b5d8df262 100644
--- a/src/run_unitary_tests_in_directory.m
+++ b/src/run_unitary_tests_in_directory.m
@@ -16,7 +16,7 @@ function report = run_unitary_tests_in_directory(dirname, savereport, printrepor
 %
 % See also get_directory_description, run_unitary_tests, build_report_summary
 
-% Copyright (C) 2013-2017 Dynare Team
+% Copyright © 2013-2017 Dynare Team
 %
 % This file is part of Dynare (m-unit-tests module).
 %