diff --git a/addons/web_editor/static/src/js/backend.js b/addons/web_editor/static/src/js/backend.js
index 94c6e8057c0..2b3c0e0790c 100644
--- a/addons/web_editor/static/src/js/backend.js
+++ b/addons/web_editor/static/src/js/backend.js
@@ -293,6 +293,8 @@ var FieldTextHtml = widget.extend({
         var self = this;
         this.$el.closest('.modal-body').css('max-height', 'none');
         this.$iframe = this.$el.find('iframe');
+        // deactivate any button to avoid saving a not ready iframe
+        $('.o_cp_buttons, .o_statusbar_buttons').find('button').addClass('o_disabled').attr('disabled', true);
         this.document = null;
         this.$body = $();
         this.$content = $();
@@ -318,6 +320,8 @@ var FieldTextHtml = widget.extend({
         this.lang = this.lang ? this.lang[1] : this.view.dataset.context.lang;
         this._dirty_flag = false;
         this.render_value();
+        // reactivate all the buttons when the field's content (the iframe) is loaded
+        $('.o_cp_buttons, .o_statusbar_buttons').find('button').removeClass('o_disabled').attr('disabled', false);
         setTimeout(function () {
             self.add_button();
             setTimeout(self.resize,0);