diff --git a/common/desktop.nix b/common/desktop.nix
index e4c3486..5173565 100644
--- a/common/desktop.nix
+++ b/common/desktop.nix
@@ -1,4 +1,5 @@
 {
+  config,
   pkgs,
   flake-pkgs,
   ...
@@ -11,6 +12,22 @@ in
   # Nice Wayland compositor.
   programs.niri.enable = true;
 
+  # So the display manager starts `niri-session` (from the desktop entry) which
+  # launches `niri.service`, which starts `niri --session`. Both
+  # `niri --session` and  `niri-session` have some weird overlap that I don't
+  # understand, but they behave slightly differently with regards to what
+  # variables they import into the session, namely, `niri --session` is more
+  # conservative. Anyhow, this unfucks the shell level by unsetting it before
+  # the unit becomes active.
+  systemd.user.services.unset-shlvl = {
+    description = "Drop the SHLVL leaked into the user manager by niri-session";
+    wantedBy = [ "graphical-session-pre.target" ];
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = "${config.systemd.package}/bin/systemctl --user unset-environment SHLVL";
+    };
+  };
+
   # Some programs need this to know to default to Wayland.
   environment.sessionVariables.NIXOS_OZONE_WL = "1";