diff --git a/scripts/Windows/Scripts/PowerManagement.ps1 b/scripts/Windows/Scripts/PowerManagement.ps1
index 2741bcf9..774eaa98 100644
--- a/scripts/Windows/Scripts/PowerManagement.ps1
+++ b/scripts/Windows/Scripts/PowerManagement.ps1
@@ -30,7 +30,13 @@ $null = New-Module {
 
         Set-ItemProperty -Path $key.PSPath -Name $runOnceName -Type "ExpandString" -Value (
             "pwsh -Command " +
-            "`$env:PWSH_PATH = $(ConvertTo-Injection $env:PWSH_PATH);" +
+            (& {
+                if ($env:PWSH_PATH) {
+                    "`$env:PWSH_PATH = $(ConvertTo-Injection $env:PWSH_PATH);"
+                } else {
+                    ""
+                }
+            }) +
             "`$env:INSTALLER_SCRIPT = $(ConvertTo-Injection $env:INSTALLER_SCRIPT);" +
             "`$env:CONFIG_MODULE = $(ConvertTo-Injection $env:CONFIG_MODULE);" +
             "& `$env:INSTALLER_SCRIPT;"