--- simple.c.old	2013-03-04 16:00:51.000000000 -0500
+++ simple.c	2013-03-04 16:02:17.000000000 -0500
@@ -70,7 +70,12 @@
 		goto lbl_ret;
 	}
 
-	attr = ldap_first_attribute(ldap, msg, &ber);
+	if (NULL == (attr = ldap_first_attribute(ldap, msg, &ber)) 
+    {
+		zabbix_log(LOG_LEVEL_DEBUG, "LDAP - empty first entry result. [%s] [%s]", host, ldap_err2string(ldapErr));
+		goto lbl_ret;
+    }
+
 	valRes = ldap_get_values(ldap, msg, attr);
 
 	*value_int = 1;