diff --git a/modules/tested/default.nix b/modules/tested/default.nix
index d6b7a77..619b724 100644
--- a/modules/tested/default.nix
+++ b/modules/tested/default.nix
@@ -6,6 +6,7 @@ with lib;
     tested.requiredChecks = mkOption {
       type = with types; listOf str;
       description = "Flake checks to perform.";
+      default = [];
     };
   };
   config.system.extraDependencies = map (name: inputs.self.checks.${pkgs.system}.${name}) config.tested.requiredChecks;