diff --git a/devel/ruby-delayer/Makefile b/devel/ruby-delayer/Makefile
index 0513dd54904d..4caef237ded9 100644
--- a/devel/ruby-delayer/Makefile
+++ b/devel/ruby-delayer/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.5 2020/01/03 01:53:56 tsutsui Exp $
+# $NetBSD: Makefile,v 1.6 2020/01/03 03:20:18 taca Exp $
 
 DISTNAME=	delayer-1.1.0
 PKGNAME=	${RUBY_PKGPREFIX}-${DISTNAME}
@@ -9,5 +9,7 @@ HOMEPAGE=	https://rubygems.org/gems/delayer
 COMMENT=	Ruby module to delay the processing
 LICENSE=	mit
 
+USE_LANGUAGES=	# none
+
 .include "../../lang/ruby/gem.mk"
 .include "../../mk/bsd.pkg.mk"