diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index 46761fdc0e9..d12d0a06f44 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -593,7 +593,7 @@ in
     services.logind.extraConfig = mkOption {
       default = "";
       type = types.lines;
-      example = "HandleLidSwitch=ignore";
+      example = "IdleAction=lock";
       description = ''
         Extra config options for systemd-logind. See man logind.conf for
         available options.