diff --git a/ZertoApiWrapper/Private/New-Map.ps1 b/ZertoApiWrapper/Private/New-Map.ps1
index 085078d..b84ea9d 100644
--- a/ZertoApiWrapper/Private/New-Map.ps1
+++ b/ZertoApiWrapper/Private/New-Map.ps1
@@ -4,7 +4,7 @@ function New-Map {
     param(
         [Parameter(Mandatory)]
         [ValidateNotNullOrEmpty()]
-        $inputObject,
+        [PSCustomObject]$inputObject,
         [Parameter(Mandatory)]
         [ValidateNotNullOrEmpty()]
         [string]$key,