diff --git a/server/server.go b/server/server.go
index c48dd04..511bb39 100644
--- a/server/server.go
+++ b/server/server.go
@@ -112,6 +112,7 @@ func NewServer(options ...OptionFn) *Server {
 		activeConn: make(map[net.Conn]struct{}),
 		doneChan:   make(chan struct{}),
 		serviceMap: make(map[string]*service),
+		router:     make(map[string]Handler),
 	}
 
 	for _, op := range options {