diff --git a/lib/dns/win32/libdns.def.in b/lib/dns/win32/libdns.def.in
index 373380ba47..88317f8382 100644
--- a/lib/dns/win32/libdns.def.in
+++ b/lib/dns/win32/libdns.def.in
@@ -1368,4 +1368,7 @@ 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