diff --git a/system/templates/tinymce.html.twig b/system/templates/tinymce.html.twig
index effea162..7f065477 100644
--- a/system/templates/tinymce.html.twig
+++ b/system/templates/tinymce.html.twig
@@ -23,6 +23,8 @@
 				{title: 'Colored Table', value: 'myaac-table'},
 			],
 
+			license_key: 'gpl',
+
 			setup: function (ed) {
 				ed.on('NodeChange', function (e) {
 					if (ed.getContent() !== lastContent) {