diff --git a/resources/templates/provision/grandstream/ht702/{$mac}.xml b/resources/templates/provision/grandstream/ht702/{$mac}.xml
index 41bc5db757..8589ea4b32 100644
--- a/resources/templates/provision/grandstream/ht702/{$mac}.xml
+++ b/resources/templates/provision/grandstream/ht702/{$mac}.xml
@@ -764,9 +764,11 @@
 <!-- FAX Mode. 0 - T.38 (Auto Detect), 1 - Pass Through -->
 <!-- Number: 0, 1 -->
 <!-- Mandatory -->
-{if $grandstream_disable_fax_t38 == '1'}<P228>1</P228>
-    {else}<P228>0</P228>
-    {/if}
+{if isset($grandstream_fax_mode)}
+<P228>1</P228>
+{else}
+<P228>0</P228>
+{/if}
 
 
 <!-- Re-INVITE After Fax Tone Detected. 0 - Disabled, 1 - Enabled. -->