diff --git a/os/common.nix b/os/common.nix
index 5719d75..bf48d7f 100644
--- a/os/common.nix
+++ b/os/common.nix
@@ -39,6 +39,7 @@
     ccache.enable = true;
     # TODO Not enough, see https://nixos.wiki/wiki/CCache.
     # Might want to see if it's worth using on NixOS
+    less.lessopen = null; # Don't use lessopen
     gnupg.agent.enable = true;
 
     # Let users mount disks