diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
index 2edc683570..7ae7c79658 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt
@@ -784,6 +784,7 @@
                     branding : false,
                     block_unsupported_drop : false,
                     content_css : "[% interface | html %]/[% theme | html %]/css/tinymce.css",
+                    convert_urls : false,
                     custom_elements:"style,link,~link",
                     extended_valid_elements:"style,link[href|rel]",
                     force_br_newlines : false,