diff --git a/www/librtcdcpp/Makefile b/www/librtcdcpp/Makefile
index 297933f9edf83..a4f02f46b08ce 100644
--- a/www/librtcdcpp/Makefile
+++ b/www/librtcdcpp/Makefile
@@ -9,6 +9,8 @@ WWW=		https://github.com/chadnickbok/librtcdcpp
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
+BROKEN=		build breaks with fmt-9.1.0, see https://github.com/chadnickbok/librtcdcpp/issues/44
+
 BUILD_DEPENDS=	spdlog>0:devel/spdlog
 LIB_DEPENDS=	libnice.so:net-im/libnice \
 		libusrsctp.so:net/libusrsctp