diff --git a/nixos/modules/services/x11/display-managers/lightdm.nix b/nixos/modules/services/x11/display-managers/lightdm.nix
index 4afef32aaa4..82b9a2fce5a 100644
--- a/nixos/modules/services/x11/display-managers/lightdm.nix
+++ b/nixos/modules/services/x11/display-managers/lightdm.nix
@@ -46,15 +46,13 @@ let
       [Seat:*]
       xserver-command = ${xserverWrapper}
       session-wrapper = ${dmcfg.session.script}
-      ${optionalString (elem defaultSessionName dmcfg.session.names) ''
-        user-session = ${defaultSessionName}
-      ''}
       ${optionalString cfg.greeter.enable ''
         greeter-session = ${cfg.greeter.name}
       ''}
       ${optionalString cfg.autoLogin.enable ''
         autologin-user = ${cfg.autoLogin.user}
         autologin-user-timeout = ${toString cfg.autoLogin.timeout}
+        autologin-session = ${defaultSessionName}
       ''}
       ${cfg.extraSeatDefaults}
     '';