diff --git a/src/ocean/Account.ts b/src/ocean/Account.ts
index 74cf779..229c1c7 100644
--- a/src/ocean/Account.ts
+++ b/src/ocean/Account.ts
@@ -4,14 +4,23 @@ import Keeper from "../keeper/Keeper"
 import Web3Provider from "../keeper/Web3Provider"
 import Balance from "../models/Balance"
 import Logger from "../utils/Logger"
-import OceanBase from "./OceanBase"
 
 /**
  * Account information.
  */
-export default class Account extends OceanBase {
+export default class Account {
     private password?: string
 
+    constructor(private id: string = "0x0") { }
+
+    public getId() {
+        return this.id
+    }
+
+    public setId(id) {
+        this.id = id
+    }
+
     /**
      * Set account password.
      * @param {string} password Password for account.
diff --git a/src/ocean/OceanBase.ts b/src/ocean/OceanBase.ts
deleted file mode 100644
index 99f23e7..0000000
--- a/src/ocean/OceanBase.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-export default abstract class OceanBase {
-
-    protected id = "0x00"
-
-    constructor(id?) {
-        if (id) {
-            this.id = id
-        }
-    }
-
-    public getId() {
-        return this.id
-    }
-
-    public setId(id) {
-        this.id = id
-    }
-}
diff --git a/test/mocks/OceanBase.Mock.ts b/test/mocks/OceanBase.Mock.ts
deleted file mode 100644
index 2078784..0000000
--- a/test/mocks/OceanBase.Mock.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-import OceanBase from "../../src/ocean/OceanBase"
-
-export default class OceanBaseMock extends OceanBase {
-}
diff --git a/test/ocean/OceanBase.test.ts b/test/ocean/OceanBase.test.ts
deleted file mode 100644
index 7160833..0000000
--- a/test/ocean/OceanBase.test.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import {assert} from "chai"
-import OceanBaseMock from "../mocks/OceanBase.Mock"
-
-describe("OceanBase", () => {
-
-    describe("#getId()", () => {
-
-        it("should get the id", async () => {
-
-            const id = "test"
-            const oceanBase = new OceanBaseMock(id)
-
-            assert(oceanBase.getId() === id)
-        })
-
-    })
-
-    describe("#setId()", () => {
-
-        it("should get the id", async () => {
-
-            const id = "test"
-            const oceanBase = new OceanBaseMock()
-            oceanBase.setId(id)
-
-            assert(oceanBase.getId() === id)
-        })
-    })
-
-})