diff --git a/addons/web_editor/static/src/js/backend/field_html.js b/addons/web_editor/static/src/js/backend/field_html.js
index ef443889484..040082f6044 100644
--- a/addons/web_editor/static/src/js/backend/field_html.js
+++ b/addons/web_editor/static/src/js/backend/field_html.js
@@ -290,7 +290,7 @@ var FieldHtml = basic_fields.DebouncedField.extend(TranslatableFieldMixin, {
                 def.resolve();
             };
 
-            this.$iframe.one('load', function onLoad() {
+            this.$iframe.on('load', function onLoad() {
                 var _avoidDoubleLoad = ++avoidDoubleLoad;
                 ajax.loadAsset(self.nodeOptions.cssReadonly).then(function (asset) {
                     if (_avoidDoubleLoad !== avoidDoubleLoad) {