diff --git a/resources/templates/provision/cisco/spa508g/{$mac}.xml b/resources/templates/provision/cisco/spa508g/{$mac}.xml
index 8c7c986c57..2b3ebbccd8 100644
--- a/resources/templates/provision/cisco/spa508g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa508g/{$mac}.xml
@@ -150,7 +150,7 @@
 <!-- SIP/NAT_Support_Parameters -->
 <Handle_VIA_received group="SIP/NAT_Support_Parameters">No</Handle_VIA_received>
 <Handle_VIA_rport group="SIP/NAT_Support_Parameters">{$spa_handle_via_rport}</Handle_VIA_rport>
-<Insert_VIA_received group="SIP/NAT_Support_Parameters">Na</Insert_VIA_received>
+<Insert_VIA_received group="SIP/NAT_Support_Parameters">No</Insert_VIA_received>
 <Insert_VIA_rport group="SIP/NAT_Support_Parameters">{$spa_insert_via_rport}</Insert_VIA_rport>
 <Substitute_VIA_Addr group="SIP/NAT_Support_Parameters">No</Substitute_VIA_Addr>
 <Send_Resp_To_Src_Port group="SIP/NAT_Support_Parameters">No</Send_Resp_To_Src_Port>