diff --git a/packages/common-testnets/src/anvil/AnvilTestnetFactory.ts b/packages/common-testnets/src/anvil/AnvilTestnetFactory.ts
index fcf8c6700..a2ed608cf 100644
--- a/packages/common-testnets/src/anvil/AnvilTestnetFactory.ts
+++ b/packages/common-testnets/src/anvil/AnvilTestnetFactory.ts
@@ -16,7 +16,7 @@ export class AnvilTestnetFactory implements TestnetFactory {
     const forkUrl = originChainIdToForkUrl(originChainId, this.opts.alchemyApiKey)
 
     console.log({
-      forkUrl: atob(forkUrl),
+      forkUrl: btoa(forkUrl),
     })
     // if forkChainId is specified, anvil requires blockNumber to be specified as well
     const forkBlockNumber = await (async () => {