diff --git a/server.go b/server.go
index 657ff75..a805254 100644
--- a/server.go
+++ b/server.go
@@ -31,7 +31,7 @@ func HandleConnection(ctx context.Context, handler ServerHandler, logger logger.
 		return err
 	}
 	var group task.Group
-	group.Append0(func(ctx context.Context) error {
+	group.Append0(func(_ context.Context) error {
 		var stream net.Conn
 		for {
 			stream, err = session.Accept()