diff --git a/resources/templates/provision/polycom/5.x/{$mac}.cfg b/resources/templates/provision/polycom/5.x/{$mac}.cfg
index d5b2655caf..ba888e7b66 100755
--- a/resources/templates/provision/polycom/5.x/{$mac}.cfg
+++ b/resources/templates/provision/polycom/5.x/{$mac}.cfg
@@ -45,7 +45,7 @@
 		{if $row.sip_transport == 'udp'}reg.{$row.line_number}.server.1.transport="UDPOnly"{/if}
 		{if $row.sip_transport == 'tls'}reg.{$row.line_number}.server.1.transport="TLS" {/if}
 		{if $row.sip_transport == 'dns srv'}reg.{$row.line_number}.server.1.transport="DNSnaptr"{/if}
-		{if isset($row.sip_port)}reg.{$row.line_number}.server.1.expires="{$row.register_expires}"{else}reg.{$row.line_number}.server.1.expires="30"{/if}
+		{if isset($row.register_expires)}reg.{$row.line_number}.server.1.expires="{$row.register_expires}"{else}reg.{$row.line_number}.server.1.expires="30"{/if}
 		{/foreach}
 	/>