diff --git a/math/gismo/Makefile b/math/gismo/Makefile
index ecb3ef54298a..d00e4bda09bb 100644
--- a/math/gismo/Makefile
+++ b/math/gismo/Makefile
@@ -1,23 +1,23 @@
 PORTNAME=	gismo
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.8.4-849
 DISTVERSIONSUFFIX=	-g8b36bfe5
 CATEGORIES=	math # geometry
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ library for isogeometric analysis (IGA)
 
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 USES=		cmake:testing compiler:c++14-lang
 USE_GITHUB=	yes
-USE_GCC=	any # clang-11 crashes: https://bugs.llvm.org/show_bug.cgi?id=51468
+USE_GCC=	yes # clang-11 crashes: https://bugs.llvm.org/show_bug.cgi?id=51468
 USE_LDCONFIG=	yes
 
 CMAKE_TESTING_ON=	GISMO_BUILD_UNITTESTS # one test is known to fail: https://github.com/gismo/gismo/issues/466
 
 GH_TUPLE=	gismo:gsElasticity:7bfde6d:gsElasticity/extensions/gsElasticity \
 		gismo:gsUnitTest:7c42e58:gsUnitTest/extensions/gsUnitTest
 
 .include <bsd.port.mk>