diff --git a/src/Controller/OgAgent/DeployImageAction.php b/src/Controller/OgAgent/DeployImageAction.php
index 70e119b..4cec527 100644
--- a/src/Controller/OgAgent/DeployImageAction.php
+++ b/src/Controller/OgAgent/DeployImageAction.php
@@ -55,7 +55,10 @@ class DeployImageAction extends AbstractController
             default => throw new ValidatorException('Invalid method'),
         };
 
-        $ptcMulticastValue = "$method $input->mcastPort:$input->mcastMode.'-duplex'.:$input->mcastIp:$input->mcastSpeed.'M'.:$input->maxClients:$input->maxTime";
+        $mcastMode = $input->mcastMode.'-duplex';
+        $mcastSpeed = $input->mcastSpeed.'M';
+
+        $ptcMulticastValue = "$method $input->mcastPort:$mcastMode:$input->mcastIp:$mcastSpeed:$input->maxClients:$input->maxTime";
         $ptcTorrentValue = "$method $input->p2pMode:$input->p2pTime";
         $ptcUnicastValue = $method;