diff --git a/addons/web_editor/static/src/js/backend.js b/addons/web_editor/static/src/js/backend.js
index 11584efe384..7f68b17b5ac 100644
--- a/addons/web_editor/static/src/js/backend.js
+++ b/addons/web_editor/static/src/js/backend.js
@@ -206,7 +206,7 @@ var FieldTextHtml = AbstractField.extend({
         };
         window.odoo[this.callback+"_updown"] = null;
         window.odoo[this.callback+"_downup"] = function (value) {
-            self.set_value(value);
+            self._setValue(value);
             self.resize();
         };