diff --git a/nixos/modules/services/misc/ombi.nix b/nixos/modules/services/misc/ombi.nix
index 83f433e0be4a..b5882168e519 100644
--- a/nixos/modules/services/misc/ombi.nix
+++ b/nixos/modules/services/misc/ombi.nix
@@ -70,6 +70,7 @@ in {
 
     users.users = mkIf (cfg.user == "ombi") {
       ombi = {
+        isSystemUser = true;
         group = cfg.group;
         home = cfg.dataDir;
       };