diff --git a/lang/opensycl/Makefile b/lang/opensycl/Makefile
index 0d553d18ec2e..0ab23c62bc65 100644
--- a/lang/opensycl/Makefile
+++ b/lang/opensycl/Makefile
@@ -15,7 +15,7 @@ BROKEN_FreeBSD_13_armv7=	configure fails: Cannot run simple program using std::f
 
 BUILD_DEPENDS=	boost-libs>0:devel/boost-libs
 
-USES=		cmake llvm:15 python shebangfix
+USES=		cmake python shebangfix
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
@@ -25,9 +25,9 @@ GH_PROJECT=	OpenSYCL
 SHEBANG_FILES=	bin/syclcc-clang cmake/syclcc-launcher
 
 .if !exists(/usr/include/omp.h)
-USES+=	compiler:gcc-c++11-lib
+USES+=	compiler:gcc-c++11-lib llvm:15
 .else
-USES+=	compiler:c++11-lang
+USES+=	compiler:c++11-lang llvm:15
 .endif
 
 do-test: # many tests fail, see https://github.com/OpenSYCL/OpenSYCL/issues/996