diff --git a/textproc/py-nltk/Makefile b/textproc/py-nltk/Makefile
index 3047fb39537a..80dafb01d485 100644
--- a/textproc/py-nltk/Makefile
+++ b/textproc/py-nltk/Makefile
@@ -1,23 +1,23 @@
 PORTNAME=	nltk
 DISTVERSION=	3.4.1
 PORTEPOCH=	2
 CATEGORIES=	textproc education python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	demon@FreeBSD.org
 COMMENT=	Natural language toolkit written in python
 
 LICENSE=	APACHE20
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}tkinter>=0:x11-toolkits/py-tkinter@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}yaml>=3.09:devel/py-yaml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sqlite3>=0:databases/py-sqlite3@${PY_FLAVOR}
 
-USES=		python:3.6+ zip
+USES=		cpe python:3.6+ zip
 USE_PYTHON=	distutils autoplist
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>