diff --git a/configuration.nix b/configuration.nix
index 2cd0075..a056891 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -150,9 +150,8 @@
     nvidia = {
       package = config.boot.kernelPackages.nvidiaPackages.stable;
 
-      # WARNING: whether to use open-source or proprietary kernel modules
-      # open = lib.mkOverride 990 (package ? open && package ? firmware);
-      open = true;
+      # using RTX 2060, so needs to be proprietary
+      open = false;
 
       nvidiaSettings = true;
       modesetting.enable = true;