diff --git a/test/powershell/Modules/Microsoft.PowerShell.Security/ConstrainedLanguageRestriction.Tests.ps1 b/test/powershell/Modules/Microsoft.PowerShell.Security/ConstrainedLanguageRestriction.Tests.ps1
index bf13c8f2aa..e28019fc60 100644
--- a/test/powershell/Modules/Microsoft.PowerShell.Security/ConstrainedLanguageRestriction.Tests.ps1
+++ b/test/powershell/Modules/Microsoft.PowerShell.Security/ConstrainedLanguageRestriction.Tests.ps1
@@ -113,7 +113,7 @@ if ($IsWindows)
 
 try
 {
-    $defaultParamValues = $PSDefaultParameterValues
+    $defaultParamValues = $PSDefaultParameterValues.Clone()
     $PSDefaultParameterValues["it:Skip"] = !$IsWindows
 
     Describe "Built-ins work within constrained language" -Tags 'Feature','RequireAdminOnWindows' {