diff --git a/skynet-src/skynet_start.c b/skynet-src/skynet_start.c
index a6a63e8b..5f511d29 100644
--- a/skynet-src/skynet_start.c
+++ b/skynet-src/skynet_start.c
@@ -232,9 +232,11 @@ skynet_start(struct skynet_config * config) {
 	bootstrap(ctx, config->bootstrap);
 
 	_start(config->thread);
+
+	// harbor_exit may call socket send, so it should exit before socket_free
+	skynet_harbor_exit();
 	skynet_socket_free();
 	if (config->daemon) {
 		daemon_exit(config->daemon);
 	}
-	skynet_harbor_exit();
 }