diff --git a/nixos/modules/services/web-servers/nginx/default.nix b/nixos/modules/services/web-servers/nginx/default.nix
index 51c2f3febdc..18e1263fef5 100644
--- a/nixos/modules/services/web-servers/nginx/default.nix
+++ b/nixos/modules/services/web-servers/nginx/default.nix
@@ -887,6 +887,7 @@ in
     users.users = optionalAttrs (cfg.user == "nginx") {
       nginx = {
         group = cfg.group;
+        isSystemUser = true;
         uid = config.ids.uids.nginx;
       };
     };