diff --git a/l1-contracts/hardhat.config.ts b/l1-contracts/hardhat.config.ts
index a89ea4e69dfb..1f2f8fb007f1 100644
--- a/l1-contracts/hardhat.config.ts
+++ b/l1-contracts/hardhat.config.ts
@@ -93,6 +93,7 @@ export default {
       return {
         ...systemParams,
         ...defs,
+        VALIDIUM_MODE: process.env.VALIDIUM_MODE === "true",
       };
     })(),
   },