diff --git a/lib/libldns/Makefile b/lib/libldns/Makefile
--- a/lib/libldns/Makefile
+++ b/lib/libldns/Makefile
@@ -10,6 +10,7 @@
 PRIVATELIB= true
 
 CFLAGS+= -I${LDNSDIR}
+CFLAGS+= -DOPENSSL_API_COMPAT=0x10100000L
 
 SRCS=	buffer.c dane.c dname.c dnssec.c dnssec_sign.c dnssec_verify.c \
 	dnssec_zone.c duration.c error.c higher.c host2str.c host2wire.c \