diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..2e1712c
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1 @@
+img.png
diff --git a/lib/client/websocket-tracker.js b/lib/client/websocket-tracker.js
index 280ca8f..773aa83 100644
--- a/lib/client/websocket-tracker.js
+++ b/lib/client/websocket-tracker.js
@@ -70,7 +70,7 @@ WebSocketTracker.prototype.destroy = function (onclose) {
   self.destroyed = true
   clearInterval(self.interval)
 
-  socketPool[self.announceUrl] = null
+  delete socketPool[self.announceUrl]
 
   self.socket.removeListener('connect', self._onSocketConnectBound)
   self.socket.removeListener('data', self._onSocketDataBound)
@@ -208,7 +208,7 @@ WebSocketTracker.prototype._onSocketData = function (data) {
 
       clearTimeout(peer.trackerTimeout)
       peer.trackerTimeout = null
-      self.peers[offerId] = null
+      delete self.peers[offerId]
     } else {
       debug('got unexpected answer: ' + JSON.stringify(data.answer))
     }
@@ -281,7 +281,7 @@ WebSocketTracker.prototype._generateOffers = function (numwant, cb) {
     peer.trackerTimeout = setTimeout(function () {
       debug('tracker timeout: destroying peer')
       peer.trackerTimeout = null
-      self.peers[offerId] = null
+      delete self.peers[offerId]
       peer.destroy()
     }, OFFER_TIMEOUT)
   }
diff --git a/lib/server/swarm.js b/lib/server/swarm.js
index d18b5b8..e6d51db 100644
--- a/lib/server/swarm.js
+++ b/lib/server/swarm.js
@@ -70,7 +70,7 @@ Swarm.prototype._onAnnounceStopped = function (params, peer) {
   if (peer.complete) this.complete -= 1
   else this.incomplete -= 1
   var id = params.type === common.PEER_TYPES.websocket ? params.peer_id : params.addr
-  this.peers[id] = null
+  delete this.peers[id]
 }
 
 Swarm.prototype._onAnnounceCompleted = function (params, peer) {
@@ -107,7 +107,6 @@ Swarm.prototype._getPeers = function (numwant, ownPeerId, isWebRTC) {
   var peerId
   while ((peerId = ite()) && peers.length < numwant) {
     var peer = this.peers[peerId]
-    if (!peer) continue
     if (isWebRTC && peer.peerId === ownPeerId) continue // don't send peer to itself
     if ((isWebRTC && peer.ip) || (!isWebRTC && peer.socket)) continue // send proper peer type
     peers.push(peer)
diff --git a/package.json b/package.json
index 7238769..db56cc9 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "bittorrent-tracker",
   "description": "Simple, robust, BitTorrent tracker (client & server) implementation",
-  "version": "7.3.2",
+  "version": "7.3.4",
   "author": {
     "name": "Feross Aboukhadijeh",
     "email": "feross@feross.org",