diff --git a/devel/ucommon/Makefile b/devel/ucommon/Makefile
index b86b69db4292..35a55dc8593d 100644
--- a/devel/ucommon/Makefile
+++ b/devel/ucommon/Makefile
@@ -1,29 +1,33 @@
 PORTNAME=	ucommon
 PORTVERSION=	7.0.0
 PORTREVISION=	6
 CATEGORIES=	devel
 MASTER_SITES=	GNU/commoncpp
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Very lightweight C++ design pattern library
 WWW=		https://www.gnu.org/software/commoncpp/
 
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/COPYING.LESSER
 
 USES=		compiler:c++11-lib cmake pathfix pkgconfig ssl
 CMAKE_ARGS=	-DBUILD_TESTING:BOOL=ON \
 		-DCMAKE_INSTALL_BINDIR:STRING=bin/${PORTNAME}
 USE_LDCONFIG=	yes
 TEST_TARGET=	test
 
 .include <bsd.port.pre.mk>
 
 .if ${COMPILER_TYPE} == clang && ${COMPILER_VERSION} >= 160
 USE_CXXSTD=	c++11
 .endif
 
+.if ( ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400092 && ${SSL_DEFAULT} == base ) || ${SSL_DEFAULT:Mopenssl3*}
+CXXFLAGS+=      -DOPENSSL_API_COMPAT=0x30000000L"
+.endif
+
 post-install:
 	${INSTALL_DATA} ${BUILD_WRKSRC}/ucommon-config.h ${STAGEDIR}${PREFIX}/include/ucommon
 
 .include <bsd.port.post.mk>