diff --git a/devel/cmake/Makefile b/devel/cmake/Makefile
--- a/devel/cmake/Makefile
+++ b/devel/cmake/Makefile
@@ -35,9 +35,8 @@
 OPTIONS_DEFAULT=MANPAGES
 OPTIONS_SUB=	yes
 
-MANPAGES_USES=		python:3.6-3.9,env
-MANPAGES_BUILD_DEPENDS=	sphinx-build-${PYTHON_VER}:textproc/py-sphinx@${PY_FLAVOR}
-MANPAGES_VARS=		BINARY_ALIAS=sphinx-build=sphinx-build-${PYTHON_VER}
+MANPAGES_USES=		python:env
+MANPAGES_BUILD_DEPENDS=	sphinx-build:textproc/py-sphinx
 MANPAGES_CONFIGURE_ON=	--sphinx-man
 
 CPACK_DESC=		Enable FreeBSD generator in CPack (experimental)