From d66b85289a1552e02e4c2c7cf62aa11ed240d5e3 Mon Sep 17 00:00:00 2001
From: Determinant <tederminant@gmail.com>
Date: Fri, 14 Jun 2019 18:17:42 -0400
Subject: minor fix

---
 include/salticidae/network.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/salticidae/network.h b/include/salticidae/network.h
index 09b85a0..b269acc 100644
--- a/include/salticidae/network.h
+++ b/include/salticidae/network.h
@@ -620,7 +620,7 @@ bool PeerNetwork<O, _, __>::check_new_conn(const conn_t &conn, uint16_t port) {
     {   /* found an unknown peer */
         const auto &addr = conn->get_addr();
         this->user_tcall->async_call([this, id](ThreadCall::Handle &) {
-            unknown_peer_cb(id);
+            if (unknown_peer_cb) unknown_peer_cb(id);
         });
         if (allow_unknown_peer)
         {
-- 
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