diff --git a/yarn-project/ethereum/src/contracts/rollup.ts b/yarn-project/ethereum/src/contracts/rollup.ts
index 11f0a384aa0b..ad175d25e25c 100644
--- a/yarn-project/ethereum/src/contracts/rollup.ts
+++ b/yarn-project/ethereum/src/contracts/rollup.ts
@@ -267,8 +267,7 @@ export class RollupContract {
 
   @memoize
   async getGenesisArchiveTreeRoot(): Promise<`0x${string}`> {
-    const block = await this.rollup.read.getBlock([0n]);
-    return block.archive;
+    return await this.rollup.read.archiveAt([0n]);
   }
 
   /**