diff --git a/src/cdn/downloadWithCurl.ts b/src/cdn/downloadWithCurl.ts
index 5fd38df..dd830e2 100644
--- a/src/cdn/downloadWithCurl.ts
+++ b/src/cdn/downloadWithCurl.ts
@@ -28,6 +28,8 @@ export default function downloadWithCurl({ host, path, tempFileName }: {host: st
     spawnedProcess.on('exit', function(code) {
       if (code === 0) {
         resolve(tempFileName);
+      } else if (code === 28) {
+        reject(`Download speed too slow, will restart "${url}".`);
       } else {
         reject(`Error in process:\n> curl ${parameters.join(' ')}\nNon-zero exit code ${code}.`);
       }