diff --git a/lib/wget.js b/lib/wget.js
index 1b55d3e..42af448 100644
--- a/lib/wget.js
+++ b/lib/wget.js
@@ -33,7 +33,7 @@ function download(src, output, options) {
             downloadedSize = 0;
             fileSize = res.headers['content-length'];
             writeStream = fs.createWriteStream(output, {
-                flags: 'a',
+                flags: 'w',
                 encoding: 'binary'
             });
 
@@ -144,4 +144,4 @@ function cleanProtocol(str) {
 }
 
 exports.download = download;
-exports.request = request;
\ No newline at end of file
+exports.request = request;