diff --git a/nixos/modules/security/pam.nix b/nixos/modules/security/pam.nix
index c10449454c50..d313187d9fe9 100644
--- a/nixos/modules/security/pam.nix
+++ b/nixos/modules/security/pam.nix
@@ -2312,8 +2312,7 @@ in
     environment.etc = lib.mapAttrs' makePAMService enabledServices;
 
     systemd =
-      lib.optionalAttrs
-        (lib.any (service: service.updateWtmp) (lib.attrValues config.security.pam.services))
+      lib.mkIf (lib.any (service: service.updateWtmp) (lib.attrValues config.security.pam.services))
         {
           tmpfiles.packages = [ pkgs.util-linux.lastlog ]; # /lib/tmpfiles.d/lastlog2-tmpfiles.conf
           services.lastlog2-import = {