diff --git a/lib/dns/win32/libdns.def.in b/lib/dns/win32/libdns.def.in
index cb88b2e8a9..6c230d63ac 100644
--- a/lib/dns/win32/libdns.def.in
+++ b/lib/dns/win32/libdns.def.in
@@ -1305,4 +1305,7 @@ dst_result_totext
 EXPORTS
 
 dns_master_style_full	DATA
+dns_zone_mkey_hour	DATA
+dns_zone_mkey_day	DATA
+dns_zone_mkey_month	DATA
 @END NOLONGER