diff --git a/science/ttk/Makefile b/science/ttk/Makefile
index 276bbe4fa4cd..31b12351e8b7 100644
--- a/science/ttk/Makefile
+++ b/science/ttk/Makefile
@@ -1,5 +1,6 @@
 PORTNAME=	ttk
 DISTVERSION=	1.2.0
+PORTREVISION=	1
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org