diff --git a/x11/hypridle/Makefile b/x11/hypridle/Makefile
index 6dddb29d3c3a0..c5988f82acb6c 100644
--- a/x11/hypridle/Makefile
+++ b/x11/hypridle/Makefile
@@ -25,6 +25,12 @@ GH_ACCOUNT=	hyprwm
 LDFLAGS+=	-Wl,--as-needed # sdbus-cpp deps
 PLIST_FILES=	bin/${PORTNAME}
 
+# XXX Drop after FreeBSD 14.0 EOL around 2025-03-01
+.if exists(/usr/include/c++/v1/__format/format_functions.h) && \
+   !exists(/usr/include/c++/v1/__format/write_escaped.h)
+CXXFLAGS+=	-fexperimental-library
+.endif
+
 post-patch:
 # https://github.com/ConsoleKit2/ConsoleKit2/issues/150
 # https://github.com/ConsoleKit2/ConsoleKit2/issues/151