diff --git a/CHANGELOG.md b/CHANGELOG.md
index 291a13c..7612a65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## {{ UNRELEASED_VERSION }} - [{{ UNRELEASED_DATE }}]({{ UNRELEASED_LINK }})
 
+* Fixed `windows` setup script passing incorrect parameter to `wsl` setup script [#46](https://github.com/lando/setup-lando/issues/44)
+
 ## v3.2.1 - [May 15, 2024](https://github.com/lando/setup-lando/releases/tag/v3.2.1)
 
 * Fixed bug preventing `Unrecognized option` message from showing correctly [#44](https://github.com/lando/setup-lando/issues/44)
diff --git a/setup-lando.ps1 b/setup-lando.ps1
index 74073b1..57d2836 100755
--- a/setup-lando.ps1
+++ b/setup-lando.ps1
@@ -473,7 +473,7 @@ function Install-LandoInWSL {
         $setupParams += "--debug"
     }
     if ($Arch) {
-        $setupParams += "--Arch=$Arch"
+        $setupParams += "--arch=$Arch"
     }
     if ($Fat) {
         $setupParams += "--fat"