1 files changed, 2 insertions, 0 deletions
diff --git a/addons/web/static/src/js/core/ajax.js b/addons/web/static/src/js/core/ajax.js
index ae3194e2a45..a35c793e5c6 100644
--- a/addons/web/static/src/js/core/ajax.js
+++ b/addons/web/static/src/js/core/ajax.js
@@ -164,6 +164,8 @@ var loadCSS = (function () {
             urlDefs[url] = new Promise(function (resolve, reject) {
                 $link.on('load', function () {
                     resolve();
+                }).on('error', function () {
+                    reject(new Error("Couldn't load css dependency: " + $link[0].href));
                 });
             });
             $('head').append($link);