diff --git a/audio/lsp-plugins-lv2/Makefile b/audio/lsp-plugins-lv2/Makefile
index 262402bbdaed..0e8c0ced0022 100644
--- a/audio/lsp-plugins-lv2/Makefile
+++ b/audio/lsp-plugins-lv2/Makefile
@@ -12,13 +12,13 @@ COMMENT=	Collection of free LV2 plugins
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-ONLY_FOR_ARCHS=	amd64 armv7 i386
+ONLY_FOR_ARCHS=	amd64 armv7 i386 powerpc64
 ONLY_FOR_ARCHS_REASON=	assembly only for these architectures
 
 BUILD_DEPENDS=	lv2>0:audio/lv2
 LIB_DEPENDS=	libsndfile.so:audio/libsndfile
 
-USES=		gmake gl gnome iconv:wchar_t pkgconfig
+USES=		compiler:c11 gmake gl gnome iconv:wchar_t pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	sadko4u
 USE_GCC=	any # clang breaks: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232911