diff --git a/tools/license.el b/tools/license.el
index a35e4308..cdc37cbf 100644
--- a/tools/license.el
+++ b/tools/license.el
@@ -38,4 +38,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# -*- coding: utf-8 -*-
 " filename))))