diff --git a/biology/gcta/Makefile b/biology/gcta/Makefile
index f7254404335e..e5fb5cca3177 100644
--- a/biology/gcta/Makefile
+++ b/biology/gcta/Makefile
@@ -1,36 +1,35 @@
 # $FreeBSD$
 
 PORTNAME=	gcta
 DISTVERSION=	1.26.0
 PORTREVISION=	1
 CATEGORIES=	biology
 MASTER_SITES=	https://cnsgenomics.com/software/gcta/pre_gcta/
 DISTNAME=	${PORTNAME}_${PORTVERSION}_src
 
 MAINTAINER=	jwb@FreeBSD.org
 COMMENT=	Genome-wide Complex Trait Analysis
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/GNU_General_Public_License_v3.txt
 
-BUILD_DEPENDS=	eigen>=3:math/eigen3
 LIB_DEPENDS+=	libopenblas.so:math/openblas
 
-USES=		compiler:openmp dos2unix gmake localbase zip
+USES=		compiler:openmp dos2unix eigen:3 gmake localbase zip
 
 CXXFLAGS+=	-I${LOCALBASE}/include/eigen3 -fopenmp
 LDFLAGS+=	-lopenblas
 
 INSTALL_TARGET=	install-strip
 PLIST_FILES=	bin/gcta
 
 .include <bsd.port.pre.mk>
 
 .if ${CHOSEN_COMPILER_TYPE} == gcc && ${COMPILER_VERSION} <= 42
 USE_GCC=	yes
 .endif
 
 do-extract:
 	${UNZIP_NATIVE_CMD} -d ${WRKSRC} ${DISTDIR}/${DISTFILES}
 
 .include <bsd.port.post.mk>