diff --git a/nemubot/server/socket.py b/nemubot/server/socket.py
index 0dee97f..612f4cb 100644
--- a/nemubot/server/socket.py
+++ b/nemubot/server/socket.py
@@ -81,7 +81,7 @@ class _Socket(AbstractServer):
 class _SocketServer(_Socket):
 
     def __init__(self, host, port, bind=None, **kwargs):
-        (family, type, proto, canonname, sockaddr) = socket.getaddrinfo(host, port)[0]
+        (family, type, proto, canonname, sockaddr) = socket.getaddrinfo(host, port, proto=socket.IPPROTO_TCP)[0]
 
         if isinstance(self, ssl.SSLSocket) and "server_hostname" not in kwargs:
             kwargs["server_hostname"] = host