diff --git a/addons/web_editor/static/src/xml/wysiwyg.xml b/addons/web_editor/static/src/xml/wysiwyg.xml
index 94b4f1ee9a4..e4fe0a7fead 100644
--- a/addons/web_editor/static/src/xml/wysiwyg.xml
+++ b/addons/web_editor/static/src/xml/wysiwyg.xml
@@ -136,7 +136,7 @@
                     <button type="button" class="btn btn-secondary o_upload_media_url_button">
                         <t t-out="addText"/>
                     </button>
-                    <div class="ml-2">
+                    <div class="mx-2">
                         <span class="o_we_url_success text-success d-none fa fa-lg fa-check" title="The URL seems valid."/>
                         <span t-if="urlWarningTitle" class="o_we_url_warning text-warning d-none fa fa-lg fa-warning" t-att-title="urlWarningTitle"/>
                         <span class="o_we_url_error text-danger d-none fa fa-lg fa-times" title="The URL does not seem to work."/>