diff --git a/core/extensions/OutOfProcCOM/COMRegistration/LocalServer.cs b/core/extensions/OutOfProcCOM/COMRegistration/LocalServer.cs
index f37bc56438a..4e20317588d 100644
--- a/core/extensions/OutOfProcCOM/COMRegistration/LocalServer.cs
+++ b/core/extensions/OutOfProcCOM/COMRegistration/LocalServer.cs
@@ -35,7 +35,7 @@ public static void Unregister(Guid clsid, string tlbPath)
 
             // Unregister local server
             string serverKey = string.Format(KeyFormat.LocalServer32, clsid);
-            Registry.LocalMachine.DeleteSubKey(serverKey, throwOnMissingSubKey: false);
+            Registry.LocalMachine.DeleteSubKeyTree(serverKey, throwOnMissingSubKey: false);
 
             // Unregister type library
             TypeLib.Unregister(tlbPath);