diff --git a/resources/templates/provision/grandstream/gxv3504/{$mac}.xml b/resources/templates/provision/grandstream/gxv3504/{$mac}.xml
index a2f33b0ed5..f8a4c9d069 100644
--- a/resources/templates/provision/grandstream/gxv3504/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxv3504/{$mac}.xml
@@ -502,7 +502,7 @@
 <P57>0</P57>
 
 <!-- SIP regexpiration -->
-<P32>3</P32>
+<P32>{$account.1.register_expires}</P32>
 
 <!-- SIP local port-->
 <P40></P40>