diff --git a/windows/installer/oem/Configure-Kiosk.ps1 b/windows/installer/oem/Configure-Kiosk.ps1
index 97eff87..13ad7ca 100644
--- a/windows/installer/oem/Configure-Kiosk.ps1
+++ b/windows/installer/oem/Configure-Kiosk.ps1
@@ -45,10 +45,10 @@ $sid=(New-Object System.Security.Principal.NTAccount($BootstrapUser)).Translate(
 try {
     Invoke-CimMethod -Namespace $cls -ClassName WESL_UserSetting -MethodName SetEnabled      -Arguments @{Enabled=$true} | Out-Null
     # Default shell = Explorer for everyone else (incl. OOBE) — critical so non-kiosk logons don't break.
-    Invoke-CimMethod -Namespace $cls -ClassName WESL_UserSetting -MethodName SetDefaultShell -Arguments @{Shell='explorer.exe';DefaultAction=[uint32]0} | Out-Null
+    Invoke-CimMethod -Namespace $cls -ClassName WESL_UserSetting -MethodName SetDefaultShell -Arguments @{Shell='explorer.exe';DefaultAction=[int32]0} | Out-Null
     # sm-bootstrap => the elevating launcher; on exit, restart the shell (action 0).
     Invoke-CimMethod -Namespace $cls -ClassName WESL_UserSetting -MethodName SetCustomShell  -Arguments @{
-        Sid=$sid; Shell="cmd.exe /c `"$launcher`""; DefaultAction=[uint32]0 } | Out-Null
+        Sid=$sid; Shell="cmd.exe /c `"$launcher`""; DefaultAction=[int32]0 } | Out-Null
     $set=Invoke-CimMethod -Namespace $cls -ClassName WESL_UserSetting -MethodName GetCustomShell -Arguments @{Sid=$sid} -ErrorAction SilentlyContinue
     if (-not $set -or [string]::IsNullOrEmpty($set.Shell)) { throw "custom shell did not take for $BootstrapUser" }
     Log "shell launcher configured for sm-bootstrap (shell=$($set.Shell))"