diff --git a/cli/test/fixtures/static-server.js b/cli/test/fixtures/static-server.js
index c39e923a6051..b39072da3a3a 100644
--- a/cli/test/fixtures/static-server.js
+++ b/cli/test/fixtures/static-server.js
@@ -109,6 +109,12 @@ class Server {
         'Origin-Agent-Cluster': '?1',
       };
 
+      // This enables an important test in Smokerider - to check if the universal fetcher
+      // used for robots.txt (and source maps) is able to fetch freely while ignoring CORS constraints.
+      if (filePath === '/robots.txt') {
+        delete headers['Access-Control-Allow-Origin'];
+      }
+
       const contentType = mime.lookup(filePath);
       const charset = mime.lookup(contentType);
       // `mime.contentType` appends the correct charset too.