diff --git a/daemon.c b/daemon.c
index 103c08d868..78cca8673f 100644
--- a/daemon.c
+++ b/daemon.c
@@ -753,7 +753,7 @@ static int execute(void)
 	struct strvec env = STRVEC_INIT;
 
 	if (addr)
-		loginfo("Connection from %s:%s", addr, port);
+		loginfo("Connection from %s:%s", addr, port ? port : "?");
 
 	set_keep_alive(0);
 	alarm(init_timeout ? init_timeout : timeout);