diff --git a/systems/bob/default.nix b/systems/bob/default.nix
index 0c912bf..ac97388 100644
--- a/systems/bob/default.nix
+++ b/systems/bob/default.nix
@@ -13,7 +13,6 @@
     "${inputs.self}/common/optional/update.nix"
     "${inputs.self}/common/optional/yubikey.nix"
     "${inputs.self}/common/optional/zerotier.nix"
-    "${inputs.self}/common/optional/brain_substituter.nix"
     "${inputs.self}/common/optional/nvidia.nix"
     ./hardware.nix
     ./syncthing.nix