diff -ur a/openldap-2.4.38/include/lber_types.hin b/openldap-2.4.38/include/lber_types.hin
--- a/openldap-2.4.38/include/lber_types.hin	2013-11-15 05:31:27.000000000 -0200
+++ b/openldap-2.4.38/include/lber_types.hin	2015-04-14 19:56:28.835674589 -0200
@@ -52,7 +52,7 @@
 typedef LBER_SOCKET_T ber_socket_t;
 
 /* lengths */
-typedef unsigned LBER_LEN_T ber_len_t;
+typedef size_t ber_len_t;
 
 /* signed lengths */
 typedef signed LBER_LEN_T ber_slen_t;