diff --git a/lib/downloader.js b/lib/downloader.js
index 3fae8e7..b1b6b1e 100644
--- a/lib/downloader.js
+++ b/lib/downloader.js
@@ -155,6 +155,9 @@ function reset() {
 }
 
 function doLru(size) {
+  if (size > MAX_SPACE_IN_B) {
+    return Promise.reject()
+  }
   return new Promise((resolve, reject) => {
     let totalSize = savedFiles[KEY_TOTAL_SIZE] ? savedFiles[KEY_TOTAL_SIZE] : 0;