diff --git a/csharp/app/OpenVpnCertificatesServer/Program.cs b/csharp/app/OpenVpnCertificatesServer/Program.cs
index fa60ee6de..3d765b2cd 100644
--- a/csharp/app/OpenVpnCertificatesServer/Program.cs
+++ b/csharp/app/OpenVpnCertificatesServer/Program.cs
@@ -1,21 +1,15 @@
-using InnovEnergy.Lib.Protocols.DBus.Utils;
-using InnovEnergy.Lib.Utils;
+using InnovEnergy.Lib.Utils;
 using InnovEnergy.Lib.Victron.VictronVRM;
-
-namespace InnovEnergy.OpenVpnCertificatesServer;
-
-using System;
-using System.Collections.Generic;
+using InnovEnergy.OpenVpnCertificatesServer.PKI;
 using System.Diagnostics;
-using System.IO;
-using System.Linq;
 using System.Text;
-using System.Threading.Tasks;
 using Flurl;
 using ICSharpCode.SharpZipLib.Tar;
-using PKI;
 using Org.BouncyCastle.Crypto;
-using static PKI.CertificateAuthority;
+
+using static InnovEnergy.OpenVpnCertificatesServer.PKI.CertificateAuthority;
+
+namespace InnovEnergy.OpenVpnCertificatesServer;
 
 // dotnet publish OpenVpnCertificatesServer.csproj -c Release -r linux-x64 -p:PublishSingleFile=true --self-contained true  && scp bin/Release/net6.0/linux-x64/publish/OpenVpnCertificatesServer ig@salidomo.innovenergy.ch:~/get_cert/get_cert
 
@@ -163,9 +157,9 @@ public static class Program
 
         foreach (var installation in installations)
         {
-            var details = await vrm.GetDetails(installation);
+            var details = await installation.GetDetails();
 
-            var id = details.MachineSerial;
+            var id = details.MachineSerial();
 
             if (id == ccdName)
                 return (ccdName, installation.Name);