diff --git a/nano/node/transport/tcp_listener.cpp b/nano/node/transport/tcp_listener.cpp
index a0144069c5..4d419dcb0f 100644
--- a/nano/node/transport/tcp_listener.cpp
+++ b/nano/node/transport/tcp_listener.cpp
@@ -35,7 +35,7 @@ nano::transport::tcp_listener::~tcp_listener ()
 	debug_assert (!thread.joinable ());
 }
 
-void nano::transport::tcp_listener::start (std::function<bool (std::shared_ptr<nano::transport::socket> const &, boost::system::error_code const &)> callback_a)
+void nano::transport::tcp_listener::start ()
 {
 	debug_assert (!thread.joinable ());
 	debug_assert (!cleanup_thread.joinable ());
@@ -56,7 +56,7 @@ void nano::transport::tcp_listener::start (std::function<bool (std::shared_ptr<n
 		throw std::runtime_error (ex.code ().message ());
 	}
 
-	thread = std::thread ([this, callback_a] {
+	thread = std::thread ([this] {
 		nano::thread_role::set (nano::thread_role::name::tcp_listener);
 		try
 		{
diff --git a/nano/node/transport/tcp_listener.hpp b/nano/node/transport/tcp_listener.hpp
index abcf2bb207..5bad7a7dd4 100644
--- a/nano/node/transport/tcp_listener.hpp
+++ b/nano/node/transport/tcp_listener.hpp
@@ -34,7 +34,7 @@ class tcp_listener final
 	tcp_listener (uint16_t port, nano::node &, std::size_t max_inbound_connections);
 	~tcp_listener ();
 
-	void start (std::function<bool (std::shared_ptr<nano::transport::socket> const &, boost::system::error_code const &)> callback = {});
+	void start ();
 	void stop ();
 
 	nano::tcp_endpoint endpoint () const;