diff --git a/resources/templates/provision/grandstream/gxp17xx/{$mac}.xml b/resources/templates/provision/grandstream/gxp17xx/{$mac}.xml
index 29a6811b0c..c3ad8e0654 100644
--- a/resources/templates/provision/grandstream/gxp17xx/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp17xx/{$mac}.xml
@@ -3556,7 +3556,11 @@
 <!-- # Use Random Port. 0 - No, 1 - Yes. Default is 0 -->
 <!-- # Number: 0, 1 -->
 <!-- # Mandatory -->
-<P78>0</P78>
+{if isset($grandstream_random_port) && !empty($grandstream_random_port)}
+    <P78>{$grandstream_random_port}</P78>
+{else}
+    <P78>0</P78>
+{/if}
 
 <!-- # Keep-Alive Interval (in seconds). Default is 20 -->
 <!-- # Number: 10 - 160 -->