diff --git a/pandora_console/ChangeLog b/pandora_console/ChangeLog
index e7948081ac..dd25ef9477 100644
--- a/pandora_console/ChangeLog
+++ b/pandora_console/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-18  Miguel de Dios  <miguel.dedios@artica.es>
+
+	* include/functions.php: fixed the snmpwalk for version 3, the function
+	need empty string instead null.
+
 2011-08-18  Sancho Lerena <slerena@artica.es>
 
 	* include/functions_servers.php: SNMP Server is SNMP Trap server.
diff --git a/pandora_console/include/functions.php b/pandora_console/include/functions.php
index 7a31a1e899..6a04026a88 100644
--- a/pandora_console/include/functions.php
+++ b/pandora_console/include/functions.php
@@ -1173,7 +1173,7 @@ function array_key_to_offset($array, $key) {
  */
 function get_snmpwalk($ip_target, $snmp_version, $snmp_community = '', $snmp3_auth_user = '',
 				$snmp3_security_level = '', $snmp3_auth_method = '', $snmp3_auth_pass = '',
-				$snmp3_privacy_method = '', $snmp3_privacy_pass = '', $quick_print = 0, $base_oid = NULL) {
+				$snmp3_privacy_method = '', $snmp3_privacy_pass = '', $quick_print = 0, $base_oid = "") {
 					
 	snmp_set_quick_print ($quick_print);