diff --git a/lib/xdcc.js b/lib/xdcc.js
index bc91861..47d0fb1 100644
--- a/lib/xdcc.js
+++ b/lib/xdcc.js
@@ -61,7 +61,14 @@ irc.Client.prototype.getXdcc = function(hostUser, hostCommand, path, isFile) {
       client.on('data', function(data) {
         file.write(data);
         received += data.length;
-        sendBuffer.writeUInt32BE(received, 0);
+        if(received > 0xffffffff)
+        {
+          sendBuffer.writeUInt32BE(received-0xffffffff,0);
+        }
+        else
+        {
+          sendBuffer.writeUInt32BE(received, 0);
+        }
         client.write(sendBuffer);
         self.emit('xdcc-data', received, details);
       });