diff --git a/lib/ansible/modules/extras/windows/win_regedit.ps1 b/lib/ansible/modules/extras/windows/win_regedit.ps1
index 1b5c9cf991..c98c79ce8e 100644
--- a/lib/ansible/modules/extras/windows/win_regedit.ps1
+++ b/lib/ansible/modules/extras/windows/win_regedit.ps1
@@ -63,9 +63,9 @@ Function Test-RegistryValueData {
 Function Compare-RegistryData {
     Param (
         [parameter(Mandatory=$true)]
-        [ValidateNotNullOrEmpty()]$ReferenceData,
+        [AllowEmptyString()]$ReferenceData,
         [parameter(Mandatory=$true)]
-        [ValidateNotNullOrEmpty()]$DifferenceData
+        [AllowEmptyString()]$DifferenceData
         )
         $refType = $ReferenceData.GetType().Name