diff --git a/website/server/middlewares/index.js b/website/server/middlewares/index.js
index 4e3295468d..dc667e5344 100644
--- a/website/server/middlewares/index.js
+++ b/website/server/middlewares/index.js
@@ -74,7 +74,7 @@ export default function attachMiddlewares (app, server) {
         ],
         imgSrc: null,
         scriptSrc: [
-          'unsafe-eval',
+          '\'unsafe-eval\'',
           'cloudfront.loggly.com',
           'js.stripe.com',
           'm.stripe.network',