diff --git a/src/internal/functions/Search-AzOpsAzGraph.ps1 b/src/internal/functions/Search-AzOpsAzGraph.ps1
index d505bdee..8a52bf1c 100644
--- a/src/internal/functions/Search-AzOpsAzGraph.ps1
+++ b/src/internal/functions/Search-AzOpsAzGraph.ps1
@@ -30,7 +30,7 @@
         [switch]
         $UseTenantScope,
         [Parameter(Mandatory = $false)]
-        [guid]
+        [string]
         $ManagementGroupName,
         [Parameter(Mandatory = $false)]
         [ValidateScript({