diff --git a/skynet-src/socket_server.c b/skynet-src/socket_server.c
index 9615b3d9..0acefc1e 100644
--- a/skynet-src/socket_server.c
+++ b/skynet-src/socket_server.c
@@ -282,6 +282,9 @@ open_socket(struct socket_server *ss, struct request_open * request, struct sock
 			sock = -1;
 			continue;
 		}
+		if (blocking) {
+			sp_nonblocking(sock);
+		}
 		break;
 	}