diff --git a/resources/templates/provision/grandstream/ht502/{$mac}.xml b/resources/templates/provision/grandstream/ht502/{$mac}.xml
index 26bc279a2..4e0759bcd 100644
--- a/resources/templates/provision/grandstream/ht502/{$mac}.xml
+++ b/resources/templates/provision/grandstream/ht502/{$mac}.xml
@@ -73,7 +73,7 @@
 		<P235></P235>
 		<!-- Allow DHCP Option 66 to override server. 0 - No, 1 - Yes. Default is Yes. -->
 		<!-- When set to Yes(1), it will override the configured provision path and method. -->
-		<P145>1</P145>
+		{if isset($grandstream_dhcp_option_override)}<P145>{$grandstream_dhcp_option_override}</P145>{else}<P145>1</P145>{/if}
 		<!-- Automatic Upgrade. 0 - No, 1 - Check daily, 2 - Check weekly, 3 - Check every () minutes. Default is No. -->
 		<P194>0</P194>
 		<!-- Check for new firmware/config file every () minutes, unit is in minute, minimum 60 minutes, default is 7 days. -->