diff --git a/src/chains/ethereum/ethereum/src/api.ts b/src/chains/ethereum/ethereum/src/api.ts
index 58ae4cda06..61a1c3ce0a 100644
--- a/src/chains/ethereum/ethereum/src/api.ts
+++ b/src/chains/ethereum/ethereum/src/api.ts
@@ -1821,10 +1821,9 @@ export default class EthereumApi implements Api {
       throw new Error("cannot sign data; no private key");
     }
 
-    const chainId = this.#options.chain.chainId;
     const messageHash = hashPersonalMessage(Data.from(message).toBuffer());
-    const { v, r, s } = ecsign(messageHash, privateKey.toBuffer(), chainId);
-    return toRpcSig(v, r, s, chainId);
+    const { v, r, s } = ecsign(messageHash, privateKey.toBuffer());
+    return toRpcSig(v, r, s);
   }
 
   /**
diff --git a/src/chains/ethereum/ethereum/tests/api/eth/sign.test.ts b/src/chains/ethereum/ethereum/tests/api/eth/sign.test.ts
index be8db14351..10240b8739 100644
--- a/src/chains/ethereum/ethereum/tests/api/eth/sign.test.ts
+++ b/src/chains/ethereum/ethereum/tests/api/eth/sign.test.ts
@@ -45,13 +45,7 @@ describe("api", () => {
         const r = Buffer.from(sgn.slice(0, 64), "hex");
         const s = Buffer.from(sgn.slice(64, 128), "hex");
         const v = parseInt(sgn.slice(128), 16);
-        const pub = ecrecover(
-          msgHash,
-          v,
-          r,
-          s,
-          provider.getOptions().chain.chainId
-        );
+        const pub = ecrecover(msgHash, v, r, s);
         const addr = fromSigned(pubToAddress(pub));
         const strAddr = "0x" + addr.toString("hex");
         assert.strictEqual(strAddr, accounts[0].toLowerCase());
@@ -71,13 +65,7 @@ describe("api", () => {
         const r = Buffer.from(sgn.slice(0, 64), "hex");
         const s = Buffer.from(sgn.slice(64, 128), "hex");
         const v = parseInt(sgn.slice(128), 16);
-        const pub = ecrecover(
-          msgHash,
-          v,
-          r,
-          s,
-          provider.getOptions().chain.chainId
-        );
+        const pub = ecrecover(msgHash, v, r, s);
         const addr = fromSigned(pubToAddress(pub));
         const strAddr = "0x" + addr.toString("hex");
         assert.deepStrictEqual(strAddr, accounts[0].toLowerCase());