diff --git a/biology/metaeuk/Makefile b/biology/metaeuk/Makefile
index f186745977bf..40712e9b8a1c 100644
--- a/biology/metaeuk/Makefile
+++ b/biology/metaeuk/Makefile
@@ -1,42 +1,42 @@
 PORTNAME=	metaeuk
 DISTVERSION=	6
 PORTREVISION=	1
 DISTVERSIONSUFFIX=	-a5d39d9
 CATEGORIES=	biology
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Gene discovery and annotation for large-scale eukaryotic metagenomics
 WWW=		https://github.com/soedinglab/metaeuk
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENCE.md
 
-.if !exists(/usr/include/omp.h)
-CMAKE_ARGS+=	-DREQUIRE_OPENMP=0
-.endif
-
 BUILD_DEPENDS=	xxd:editors/vim
 TEST_DEPENDS=	bash:shells/bash
 
 USES=		cmake perl5 shebangfix
 USE_PERL5=	build
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	soedinglab
 GH_TUPLE=	soedinglab:metaeuk-regression:6404519:metaeuk_regression/tests \
 		soedinglab:MMseqs2-Regression:f69b185:MMseqs2_Regression/lib/mmseqs/util/regression
 
 SHEBANG_GLOB=	*.sh
 
 PLIST_FILES=	bin/metaeuk
 
 CMAKE_OFF=	NATIVE_ARCH
 
 .if !exists(/usr/include/omp.h)
 CMAKE_ARGS+=	-DREQUIRE_OPENMP:BOOL=OFF
+
+post-patch: # workaround for https://github.com/soedinglab/metaeuk/issues/55
+	@${REINPLACE_CMD} -e 's|set(REQUIRE_OPENMP 1 |set(REQUIRE_OPENMP 0 |' ${WRKSRC}/lib/mmseqs/src/CMakeLists.txt
+	
 .endif
 
 do-test:
 	@cd ${WRKSRC}/tests && ./run.sh ${STAGEDIR}${PREFIX}/bin/metaeuk
 
 .include <bsd.port.mk>