diff --git a/packer/windowsserver2019.pkr.hcl b/packer/windowsserver2019.pkr.hcl
index 79bcb29..f405611 100644
--- a/packer/windowsserver2019.pkr.hcl
+++ b/packer/windowsserver2019.pkr.hcl
@@ -22,7 +22,7 @@ source "vsphere-iso" "srv2019-t" {
   guest_os_type           = "windows9Server64Guest"
 
   boot_order              = "disk,cdrom"
-  boot_command            = ""
+  boot_command            = [""]
   boot_wait               = "5m"
 
   communicator            = "winrm"
@@ -31,7 +31,7 @@ source "vsphere-iso" "srv2019-t" {
   winrm_timeout           = "10m"
 
   RAM                     = 8192
-  cpus                    = 2
+  CPUs                    = 2
 
   network_adapters {
     network               = "${var.vsphere_network}"
@@ -41,8 +41,8 @@ source "vsphere-iso" "srv2019-t" {
     disk_size             = 20480
     disk_thin_provisioned = true
   }
-  disk_controller_type    = "lsilogic-sas"
-  usb_controller          = "xhci"
+  disk_controller_type    = ["lsilogic-sas"]
+  usb_controller          = ["xhci"]
 
   floppy_files            = [
     "packer/preseed/Server2019/Autounattend.xml",
@@ -61,7 +61,7 @@ source "vsphere-iso" "srv2019-t" {
   shutdown_command        = "C:\\Windows\\System32\\Sysprep\\sysprep.exe /generalize /oobe /unattend:A:\\Sysprep_Unattend.xml"
   shutdown_timeout        = "1h"
 
-  export = {
+  export {
     images                = false
     output_directory      = "/scratch/srv2019-t"
   }
@@ -83,7 +83,7 @@ source "vsphere-iso" "srv2019-v" {
   guest_os_type           = "windows9Server64Guest"
   
   boot_order              = "disk,cdrom"
-  boot_command            = ""
+  boot_command            = [""]
   boot_wait               = "5m"
 
   communicator            = "winrm"
@@ -92,7 +92,7 @@ source "vsphere-iso" "srv2019-v" {
   winrm_username          = "administrator"
 
   RAM                     = 8192
-  cpus                    = 2
+  CPUs                    = 2
 
   network_adapters {
     network               = "${var.vsphere_network}"
@@ -102,8 +102,8 @@ source "vsphere-iso" "srv2019-v" {
     disk_size             = 20480
     disk_thin_provisioned = true
   }
-  disk_controller_type    = "lsilogic-sas"
-  usb_controller          = "xhci"
+  disk_controller_type    = ["lsilogic-sas"]
+  usb_controller          = ["xhci"]
 
   floppy_files            = [
     "packer/preseed/Server2019/Autounattend.xml",
@@ -122,7 +122,7 @@ source "vsphere-iso" "srv2019-v" {
   shutdown_command        = "C:\\Windows\\System32\\Sysprep\\sysprep.exe /generalize /oobe /unattend:A:\\Sysprep_Unattend.xml"
   shutdown_timeout        = "1h"
 
-  export = {
+  export {
     images                = false
     output_directory      = "/scratch/srv2019-v"
   }