diff --git a/libraries/networking/src/PacketReceiver.cpp b/libraries/networking/src/PacketReceiver.cpp
index 98c4843d03..cb35b9b5c9 100644
--- a/libraries/networking/src/PacketReceiver.cpp
+++ b/libraries/networking/src/PacketReceiver.cpp
@@ -226,7 +226,7 @@ void PacketReceiver::handleVerifiedPacket(std::unique_ptr<udt::Packet> packet) {
     
     auto it = _packetListenerMap.find(nlPacket->getType());
     
-    if (it != _packetListenerMap.end()) {
+    if (it != _packetListenerMap.end() && it->second.isValid()) {
         
         auto listener = it.value();