diff --git a/doc/Changelog b/doc/Changelog
index db4b27a2c..d9aeec1c8 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,3 +1,8 @@
+18 September 2020: Wouter
+	- Fix that prefer-ip4 and prefer-ip6 can be get and set with
+	  unbound-control, with libunbound and the unbound-checkconf option
+	  output function.
+
 15 September 2020: George
 	- Introduce test for statistics.
 
diff --git a/util/config_file.c b/util/config_file.c
index 209a8d752..a20b1f9c9 100644
--- a/util/config_file.c
+++ b/util/config_file.c
@@ -497,6 +497,8 @@ int config_set_option(struct config_file* cfg, const char* opt,
 	else S_YNO("do-ip6:", do_ip6)
 	else S_YNO("do-udp:", do_udp)
 	else S_YNO("do-tcp:", do_tcp)
+	else S_YNO("prefer-ip4:", prefer_ip4)
+	else S_YNO("prefer-ip6:", prefer_ip6)
 	else S_YNO("tcp-upstream:", tcp_upstream)
 	else S_YNO("udp-upstream-without-downstream:",
 		udp_upstream_without_downstream)
@@ -961,6 +963,8 @@ config_get_option(struct config_file* cfg, const char* opt,
 	else O_YNO(opt, "do-ip6", do_ip6)
 	else O_YNO(opt, "do-udp", do_udp)
 	else O_YNO(opt, "do-tcp", do_tcp)
+	else O_YNO(opt, "prefer-ip4", prefer_ip4)
+	else O_YNO(opt, "prefer-ip6", prefer_ip6)
 	else O_YNO(opt, "tcp-upstream", tcp_upstream)
 	else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream)
 	else O_DEC(opt, "tcp-mss", tcp_mss)