diff --git a/src/lib/enr/keypair/index.spec.ts b/src/lib/enr/keypair/index.spec.ts
index 061e4716ce..a18c2a9661 100644
--- a/src/lib/enr/keypair/index.spec.ts
+++ b/src/lib/enr/keypair/index.spec.ts
@@ -2,12 +2,7 @@ import { expect } from "chai";
 import { keys } from "libp2p-crypto";
 import PeerId from "peer-id";
 
-import {
-  AbstractKeypair,
-  createPeerIdFromKeypair,
-  generateKeypair,
-  KeypairType,
-} from "./index";
+import { createPeerIdFromKeypair, generateKeypair, KeypairType } from "./index";
 
 const { supportedKeys } = keys;
 
@@ -27,7 +22,7 @@ describe("createPeerIdFromKeypair", function () {
 
   it("should properly create a PeerId from a secp256k1 keypair without private key", async function () {
     const keypair = await generateKeypair(KeypairType.secp256k1);
-    delete (keypair as AbstractKeypair)._privateKey;
+    delete (keypair as any)._privateKey;
     const pubKey = new supportedKeys.secp256k1.Secp256k1PublicKey(
       keypair.publicKey
     );
diff --git a/src/lib/enr/keypair/secp256k1.ts b/src/lib/enr/keypair/secp256k1.ts
index 781af5db69..7abef54d98 100644
--- a/src/lib/enr/keypair/secp256k1.ts
+++ b/src/lib/enr/keypair/secp256k1.ts
@@ -3,7 +3,7 @@ import { concat } from "uint8arrays/concat";
 
 import { randomBytes } from "../../crypto";
 
-import { AbstractKeypair, IKeypair, IKeypairClass, KeypairType } from "./types";
+import { IKeypair, IKeypairClass, KeypairType } from "./types";
 
 export function secp256k1PublicKeyToCompressed(
   publicKey: Uint8Array
@@ -30,17 +30,24 @@ export function secp256k1PublicKeyToRaw(publicKey: Uint8Array): Uint8Array {
 }
 
 export const Secp256k1Keypair: IKeypairClass = class Secp256k1Keypair
-  extends AbstractKeypair
   implements IKeypair
 {
   readonly type: KeypairType;
+  _privateKey?: Uint8Array;
+  readonly _publicKey?: Uint8Array;
 
   constructor(privateKey?: Uint8Array, publicKey?: Uint8Array) {
     let pub = publicKey;
     if (pub) {
       pub = secp256k1PublicKeyToCompressed(pub);
     }
-    super(privateKey, pub);
+    if ((this._privateKey = privateKey) && !this.privateKeyVerify()) {
+      throw new Error("Invalid private key");
+    }
+    if ((this._publicKey = pub) && !this.publicKeyVerify()) {
+      throw new Error("Invalid public key");
+    }
+
     this.type = KeypairType.secp256k1;
   }
 
@@ -77,4 +84,22 @@ export const Secp256k1Keypair: IKeypairClass = class Secp256k1Keypair
       return false;
     }
   }
+
+  get privateKey(): Uint8Array {
+    if (!this._privateKey) {
+      throw new Error();
+    }
+    return this._privateKey;
+  }
+
+  get publicKey(): Uint8Array {
+    if (!this._publicKey) {
+      throw new Error();
+    }
+    return this._publicKey;
+  }
+
+  hasPrivateKey(): boolean {
+    return !!this._privateKey;
+  }
 };
diff --git a/src/lib/enr/keypair/types.ts b/src/lib/enr/keypair/types.ts
index f6f13b3656..00e0696981 100644
--- a/src/lib/enr/keypair/types.ts
+++ b/src/lib/enr/keypair/types.ts
@@ -18,43 +18,3 @@ export interface IKeypairClass {
   new (privateKey?: Uint8Array, publicKey?: Uint8Array): IKeypair;
   generate(): Promise<IKeypair>;
 }
-
-export abstract class AbstractKeypair {
-  _privateKey?: Uint8Array;
-  readonly _publicKey?: Uint8Array;
-
-  constructor(privateKey?: Uint8Array, publicKey?: Uint8Array) {
-    if ((this._privateKey = privateKey) && !this.privateKeyVerify()) {
-      throw new Error("Invalid private key");
-    }
-    if ((this._publicKey = publicKey) && !this.publicKeyVerify()) {
-      throw new Error("Invalid public key");
-    }
-  }
-
-  get privateKey(): Uint8Array {
-    if (!this._privateKey) {
-      throw new Error();
-    }
-    return this._privateKey;
-  }
-
-  get publicKey(): Uint8Array {
-    if (!this._publicKey) {
-      throw new Error();
-    }
-    return this._publicKey;
-  }
-
-  privateKeyVerify(): boolean {
-    return true;
-  }
-
-  publicKeyVerify(): boolean {
-    return true;
-  }
-
-  hasPrivateKey(): boolean {
-    return Boolean(this._privateKey);
-  }
-}