diff --git a/test/mock_server.cpp b/test/mock_server.cpp
index 1cc7edac..6f4fb3c6 100644
--- a/test/mock_server.cpp
+++ b/test/mock_server.cpp
@@ -116,7 +116,7 @@ void MockServer<C>::serverThread() {
                            : typename C::Connect::Response(C::Connect::Status::kSuccess);
       });
 
-  Poco::Net::DatagramSocket udp_socket({kHostname, 0});
+  Poco::Net::DatagramSocket udp_socket({kHostname, 0}, /*reuseAddress*/ false);
   udp_socket.setBlocking(true);
   Socket udp_socket_wrapper;
   udp_socket_wrapper.sendBytes = [&](const void* data, size_t size) {