diff --git a/include/lutil.h b/include/lutil.h
index 4d8d209b5d..6f14d55980 100644
--- a/include/lutil.h
+++ b/include/lutil.h
@@ -12,6 +12,7 @@ LDAP_BEGIN_DECL
 
 LDAP_F int b64_ntop LDAP_P((u_char const *, size_t, char *, size_t));
 LDAP_F int b64_pton LDAP_P((char const *, u_char *, size_t));
+LDAP_F void lutil_detach LDAP_P((int debug, int do_close));
 
 LDAP_END_DECL