diff --git a/router/java/src/net/i2p/router/transport/TransportManager.java b/router/java/src/net/i2p/router/transport/TransportManager.java
index 6e887c4eb546d7d9aeef544ee7699b05645a3e1f..3029a1ce8c0a5c1e2d8ccb65ce67846182357841 100644
--- a/router/java/src/net/i2p/router/transport/TransportManager.java
+++ b/router/java/src/net/i2p/router/transport/TransportManager.java
@@ -260,7 +260,7 @@ public class TransportManager implements TransportEventListener {
         Transport udp = null;
         if (_enableUDP) {
             X25519KeyFactory xdh = _context.getBooleanProperty(PROP_ENABLE_SSU2) ? _xdhThread : null;
-            udp = new UDPTransport(_context, _dhThread, _xdhThread);
+            udp = new UDPTransport(_context, _dhThread, xdh);
             addTransport(udp);
             initializeAddress(udp);
         }