diff --git a/p2p/server.go b/p2p/server.go
index 861fc401a8..819d38607e 100644
--- a/p2p/server.go
+++ b/p2p/server.go
@@ -147,7 +147,7 @@ func (srv *Server) SuggestPeer(addr string, pubkey []byte) error {
 // to decide if it is a worthwhile connection
 func (srv *Server) AddPeer(addr *peerAddr) (err error) {
 	if srv.NoDial {
-		return fmt.Errorln("no dial out")
+		return fmt.Errorf("no dial out")
 	}
 	// need to look up nodeID first
 	peer := &Peer{