diff --git a/lib/udp-tracker.js b/lib/udp-tracker.js
index 0f0fb25..1ad5f3c 100644
--- a/lib/udp-tracker.js
+++ b/lib/udp-tracker.js
@@ -82,6 +82,7 @@ UDPTracker.prototype._request = function (opts) {
   var socket = dgram.createSocket('udp4')
 
   var cleanup = function () {
+    if (!socket) return
     self._cleanupFns.splice(self._cleanupFns.indexOf(cleanup), 1)
     if (timeout) {
       clearTimeout(timeout)