diff --git a/EnvyUpdate/Debug.cs b/EnvyUpdate/Debug.cs
index 5df7a21..f2f8e91 100644
--- a/EnvyUpdate/Debug.cs
+++ b/EnvyUpdate/Debug.cs
@@ -20,7 +20,7 @@ namespace EnvyUpdate
                 case "osid":
                     return 57;
                 case "dtcid":
-                    return 0;
+                    return 1;
                 case "dtid":
                     return 1;
                 default:
diff --git a/EnvyUpdate/Util.cs b/EnvyUpdate/Util.cs
index f95ad1f..43e5dd0 100644
--- a/EnvyUpdate/Util.cs
+++ b/EnvyUpdate/Util.cs
@@ -338,7 +338,7 @@ namespace EnvyUpdate
         {
             try
             {
-                RegistryKey nvlddmkm = Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\services\nvlddmkm", true);
+                RegistryKey nvlddmkm = Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\services\nvlddmkm", false);
                 return nvlddmkm.GetValueNames().Contains("DCHUVen");
             }
             catch (Exception ex)