diff --git a/Scripts/Features/RegistryBackupValidation.ps1 b/Scripts/Features/RegistryBackupValidation.ps1
index d74feeb..db409dc 100644
--- a/Scripts/Features/RegistryBackupValidation.ps1
+++ b/Scripts/Features/RegistryBackupValidation.ps1
@@ -385,7 +385,7 @@ function Find-RegistryAllowListPlanMatch {
             continue
         }
 
-        $subKeyPrefix = "$($plan.NormalizedPath)\\"
+        $subKeyPrefix = "$($plan.NormalizedPath)\"
         if ($NormalizedPath.StartsWith($subKeyPrefix, [System.StringComparison]::OrdinalIgnoreCase)) {
             return [PSCustomObject]@{
                 IsDescendant = $true