diff --git a/client/scripts/network.js b/client/scripts/network.js
index 592053b..da7e96a 100644
--- a/client/scripts/network.js
+++ b/client/scripts/network.js
@@ -186,6 +186,8 @@ class Peer {
     }
 
     _onChunkReceived(chunk) {
+        if(!chunk.byteLength) return;
+        
         this._digester.unchunk(chunk);
         const progress = this._digester.progress;
         this._onDownloadProgress(progress);
@@ -487,6 +489,8 @@ class FileDigester {
         this._bytesReceived += chunk.byteLength || chunk.size;
         const totalChunks = this._buffer.length;
         this.progress = this._bytesReceived / this._size;
+        if (isNaN(this.progress)) this.progress = 1
+
         if (this._bytesReceived < this._size) return;
         // we are done
         let blob = new Blob(this._buffer, { type: this._mime });