diff --git a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
index 9ab0068c06a0..fdaeda8081cf 100644
--- a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
+++ b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
@@ -6,6 +6,10 @@ import {JsonRpcHttpClient} from "../../../src/eth1/provider/jsonRpcHttpClient.js
 import {getGoerliRpcUrl} from "../../testParams.js";
 import {RpcPayload} from "../../../src/eth1/interface.js";
 
+type FetchError = {
+  code: string;
+};
+
 describe("eth1 / jsonRpcHttpClient", function () {
   this.timeout("10 seconds");
 
@@ -22,6 +26,7 @@ describe("eth1 / jsonRpcHttpClient", function () {
     abort?: true;
     timeout?: number;
     error: any;
+    errorCode?: string;
   }[] = [
     // // NOTE: This DNS query is very expensive, all cache miss. So it can timeout the tests and cause false positives
     // {
@@ -39,7 +44,8 @@ describe("eth1 / jsonRpcHttpClient", function () {
       id: "Bad port",
       url: `http://localhost:${port + 1}`,
       requestListener: (req, res) => res.end(),
-      error: "connect ECONNREFUSED",
+      error: "",
+      errorCode: "ECONNREFUSED",
     },
     {
       id: "Not a JSON RPC endpoint",
@@ -122,7 +128,6 @@ describe("eth1 / jsonRpcHttpClient", function () {
 
   for (const testCase of testCases) {
     const {id, requestListener, abort, timeout} = testCase;
-    const error = testCase.error as Error;
     let {url, payload} = testCase;
 
     it(id, async function () {
@@ -148,7 +153,16 @@ describe("eth1 / jsonRpcHttpClient", function () {
       const controller = new AbortController();
       if (abort) setTimeout(() => controller.abort(), 50);
       const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-      await expect(eth1JsonRpcClient.fetch(payload, {timeout})).to.be.rejectedWith(error);
+
+      try {
+        await eth1JsonRpcClient.fetch(payload, {timeout});
+      } catch (error) {
+        if (testCase.errorCode) {
+          expect((error as FetchError).code).to.eql(testCase.errorCode);
+        } else {
+          expect((error as Error).message).includes(testCase.error);
+        }
+      }
     });
   }
 });
@@ -201,16 +215,18 @@ describe("eth1 / jsonRpcHttpClient - with retries", function () {
 
     const controller = new AbortController();
     const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-    await expect(
-      eth1JsonRpcClient.fetchWithRetries(payload, {
+    try {
+      await eth1JsonRpcClient.fetchWithRetries(payload, {
         retryAttempts,
         shouldRetry: () => {
           // using the shouldRetry function to keep tab of the retried requests
           retryCount++;
           return true;
         },
-      })
-    ).to.be.rejectedWith("connect ECONNREFUSED");
+      });
+    } catch (error) {
+      expect((error as FetchError).code).eql("ECONNREFUSED");
+    }
     expect(retryCount).to.be.equal(retryAttempts, "connect ECONNREFUSED should be retried before failing");
   });