diff --git a/p2p/discv5/net.go b/p2p/discv5/net.go
index 8a548eeb4c..c912cba7d1 100644
--- a/p2p/discv5/net.go
+++ b/p2p/discv5/net.go
@@ -641,7 +641,7 @@ loop:
 	}
 	log.Trace("loop stopped")
 
-	log.Debug(fmt.Sprintf("shutting down"))
+	log.Debug("shutting down")
 	if net.conn != nil {
 		net.conn.Close()
 	}