diff --git a/addons/web_editor/static/src/js/wysiwyg/widgets/alt_dialog.js b/addons/web_editor/static/src/js/wysiwyg/widgets/alt_dialog.js
index 98abc75f6c1..80f143b646c 100644
--- a/addons/web_editor/static/src/js/wysiwyg/widgets/alt_dialog.js
+++ b/addons/web_editor/static/src/js/wysiwyg/widgets/alt_dialog.js
@@ -51,7 +51,7 @@ var AltDialog = Dialog.extend({
         var allNonEscQuots = /"/g;
         $(this.media).attr('alt', alt ? alt.replace(allNonEscQuots, """) : null)
             .attr('title', title ? title.replace(allNonEscQuots, """) : null);
-
+        $(this.media).trigger('content_changed');
         this.final_data = this.media;
         return this._super.apply(this, arguments);
     },