diff --git a/emhttp/plugins/dynamix.docker.manager/include/Helpers.php b/emhttp/plugins/dynamix.docker.manager/include/Helpers.php
index 820acef3d..3064d9066 100644
--- a/emhttp/plugins/dynamix.docker.manager/include/Helpers.php
+++ b/emhttp/plugins/dynamix.docker.manager/include/Helpers.php
@@ -59,7 +59,7 @@ function postToXML($post, $setOwnership=false) {
   $xml->DonateLink         = xml_encode($post['contDonateLink']);
   $xml->Requires           = xml_encode($post['contRequires']);
 
-  $size = is_array($post['confName']) ? count($post['confName']) : 0;
+  $size = is_array($post['confName']??null) ? count($post['confName']) : 0;
   for ($i = 0; $i < $size; $i++) {
     $Type                  = $post['confType'][$i];
     $config                = $xml->addChild('Config', xml_encode($post['confValue'][$i]));