diff --git a/security/ktls_isa-l_crypto-kmod/Makefile b/security/ktls_isa-l_crypto-kmod/Makefile
--- a/security/ktls_isa-l_crypto-kmod/Makefile
+++ b/security/ktls_isa-l_crypto-kmod/Makefile
@@ -33,6 +33,10 @@
 IGNORE=		requires KTLS support
 .endif
 
+.if ${OSVERSION} >= 1400016
+IGNORE=		is only supported on FreeBSD 13
+.endif
+
 post-extract:
 	${CP} ${FILESDIR}/* ${WRKSRC}/
 	${ECHO} "#include <sys/stdint.h>" > ${WRKSRC}/include/stdint.h