diff --git a/ghost/core/core/frontend/web/site.js b/ghost/core/core/frontend/web/site.js
index 25b776c73b..9bdc3accd5 100644
--- a/ghost/core/core/frontend/web/site.js
+++ b/ghost/core/core/frontend/web/site.js
@@ -73,8 +73,27 @@ module.exports = function setupSiteApp(routerConfig) {
     siteApp.use(mw.servePublicFile('static', 'public/ghost.min.css', 'text/css', config.get('caching:publicAssets:maxAge')));
 
     // Card assets
-    siteApp.use(cardAssets.serveMiddleware(), mw.servePublicFile('built', 'public/cards.min.css', 'text/css', config.get('caching:publicAssets:maxAge')));
-    siteApp.use(cardAssets.serveMiddleware(), mw.servePublicFile('built', 'public/cards.min.js', 'application/javascript', config.get('caching:publicAssets:maxAge')));
+    const cardAssetsCSSPath = 'public/cards.min.css';
+    const cardAssetsJSPath = 'public/cards.min.js';
+
+    siteApp.use(
+        function serveCardAssetsCssMiddleware(req, res, next) {
+            if (req.path === `/${cardAssetsCSSPath}`) {
+                return cardAssets.serveMiddleware()(req, res, next);
+            }
+            next();
+        },
+        mw.servePublicFile('built', cardAssetsCSSPath, 'text/css', config.get('caching:publicAssets:maxAge'))
+    );
+    siteApp.use(
+        function serveCardAssetsJsMiddleware(req, res, next) {
+            if (req.path === `/${cardAssetsJSPath}`) {
+                return cardAssets.serveMiddleware()(req, res, next);
+            }
+            next();
+        },
+        mw.servePublicFile('built', cardAssetsJSPath, 'application/javascript', config.get('caching:publicAssets:maxAge'))
+    );
 
     // Comment counts
     siteApp.use(mw.servePublicFile('static', 'public/comment-counts.min.js', 'application/javascript', config.get('caching:publicAssets:maxAge')));