diff --git a/build/apu-conf.m4 b/build/apu-conf.m4
index 8943f10..aa44305 100644
--- a/build/apu-conf.m4
+++ b/build/apu-conf.m4
@@ -279,6 +279,7 @@ AC_ARG_WITH(ldap,[  --with-ldap=library     ldap library to use],
         APU_FIND_LDAPLIB("ldap", "-llber -lresolv -lsocket -lnsl")
         APU_FIND_LDAPLIB("ldap", "-ldl -lpthread")
       else
+        APU_FIND_LDAPLIB($LIBLDAP, "-llber -lcrypto -lssl -lsasl2")
         APU_FIND_LDAPLIB($LIBLDAP)
         APU_FIND_LDAPLIB($LIBLDAP, "-lresolv")
         APU_FIND_LDAPLIB($LIBLDAP, "-lresolv -lsocket -lnsl")