diff --git a/lib/isc/win32/libisc.def.in b/lib/isc/win32/libisc.def.in
index c73c2fce66..3084078d4d 100644
--- a/lib/isc/win32/libisc.def.in
+++ b/lib/isc/win32/libisc.def.in
@@ -311,6 +311,7 @@ isc_hmacsha512_verify
 isc_httpd_addheader
 isc_httpd_addheaderuint
 isc_httpd_response
+isc_httpd_setfinishhook
 isc_httpdmgr_addurl
 isc_httpdmgr_addurl2
 isc_httpdmgr_create