diff --git a/packages/libs/sdk/spec/core/client.spec.ts b/packages/libs/sdk/spec/core/client.spec.ts
index 9639fc0e..f993ac8a 100644
--- a/packages/libs/sdk/spec/core/client.spec.ts
+++ b/packages/libs/sdk/spec/core/client.spec.ts
@@ -123,7 +123,7 @@ describe('core client', () => {
       endpointUrl: 'https://some-cool-name.optimism.quiknode.pro/abcd/',
     });
     chainName = endpoint.client.chain?.name;
-    expect(chainName).toEqual('Optimism');
+    expect(chainName).toEqual('OP Mainnet');
 
     endpoint = new Core({
       endpointUrl: 'https://some-cool-name.optimism-goerli.quiknode.pro/abcd/',