diff --git a/configure.in b/configure.in
index 9398482..41402df 100644
--- a/configure.in
+++ b/configure.in
@@ -1596,6 +1596,7 @@ fi
 # Cygwin needs only a bit of that
 if test "$PORTNAME" = "cygwin"; then
   AC_LIBOBJ(dirmod)
+  AC_LIBOBJ(win32security)
 fi

 AC_CHECK_DECLS([sys_siglist], [], [],