diff --git a/science/nlcglib/Makefile b/science/nlcglib/Makefile
index 6fd8a974b7bd..43c6f0600133 100644
--- a/science/nlcglib/Makefile
+++ b/science/nlcglib/Makefile
@@ -1,38 +1,42 @@
 PORTNAME=	nlcglib
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.1.0
 PORTREVISION=	2
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Nonlinear CG methods for wave-function optimization in DFT
 WWW=		https://github.com/simonpintarelli/nlcglib
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	nlohmann-json>0:devel/nlohmann-json
 LIB_DEPENDS=	libkokkoscore.so:devel/kokkos \
 		libopenblas.so:math/openblas
 TEST_DEPENDS=	googletest>0:devel/googletest
 
+.if !exists(/usr/include/omp.h)
+BROKEN=		requires OpenMP support that is missing on this architecture
+.endif
+
 USES=		cmake:testing pkgconfig
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	simonpintarelli
 
 CMAKE_TESTING_ON=	BUILD_TESTS # tests fail to compile, see https://github.com/simonpintarelli/nlcglib/issues/19
 
 OPTIONS_DEFINE=		OPENMP
 OPTIONS_SINGLE=		MPI
 OPTIONS_SINGLE_MPI=	MPICH OPENMPI
 OPTIONS_DEFAULT=	MPICH OPENMP
 
 MPICH_USES=		mpi:mpich
 
 OPENMPI_USES=		mpi:openmpi
 
 OPENMP_CMAKE_BOOL=	USE_OPENMP # binaries are still linked with libomp when USE_OPENMP=OFF, see https://github.com/simonpintarelli/nlcglib/issues/13
 
 .include <bsd.port.mk>