diff --git a/sysutils/lttng-ust/Makefile b/sysutils/lttng-ust/Makefile
index ebf5ba0e25f8..ea42a7f20ab2 100644
--- a/sysutils/lttng-ust/Makefile
+++ b/sysutils/lttng-ust/Makefile
@@ -1,34 +1,36 @@
 # Created by: Mahdi Mokhtari <mokhi64@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	lttng-ust
 PORTVERSION=	2.9.0
 PORTREVISION=	2
 CATEGORIES=	sysutils
 MASTER_SITES=	http://lttng.org/files/${PORTNAME}/
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Libraries to instrument and trace user applications
 
 LICENSE=		LGPL21 MIT GPLv2
 LICENSE_COMB=		dual
 LICENSE_FILE_LGPL21=	${WRKSRC}/COPYING
 LICENSE_FILE_MIT=	${WRKSRC}/COPYING
 LICENSE_FILE_GPLv2=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	liburcu.so:sysutils/liburcu
 
 USES=		autoreconf libtool localbase pathfix python \
 	    shebangfix tar:bzip2
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
+# XXX: build fails if cmake is detected, see PR 253327
+CONFIGURE_ENV=	ac_cv_prog_HAVE_CMAKE=no
 INSTALL_TARGET=	install-strip
 TEST_TARGET=	check
 
 OPTIONS_DEFINE=	DOCS
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|%%PYTHON_VERSION%%|${PYTHON_VERSION}|g' \
 	    ${PATCH_WRKSRC}/tools/lttng-gen-tp
 
 .include <bsd.port.mk>