diff --git a/test/unit/ocean/utils/SignatureUtils.test.ts b/test/unit/ocean/utils/SignatureUtils.test.ts
index 91aaea1f..77ef79fa 100644
--- a/test/unit/ocean/utils/SignatureUtils.test.ts
+++ b/test/unit/ocean/utils/SignatureUtils.test.ts
@@ -1,22 +1,22 @@
 import { assert, expect, spy, use } from 'chai'
 import spies from 'chai-spies'
 import Web3 from 'web3'
-import config from '../../config'
-
-import { Ocean } from '../../../../src/ocean/Ocean'
+import { SignatureUtils } from '../../../../src/ocean/utils/SignatureUtils'
+import { Logger } from '../../../../src/utils'
 
 use(spies)
 
+const web3 = new Web3('http://127.0.0.1:8545')
+
 describe('SignatureUtils', () => {
   const publicKey = `0x${'a'.repeat(40)}`
   const text = '0123456789abcde'
   const signature = `0x${'a'.repeat(130)}`
-  let web3: Web3
-  let ocean: Ocean
+
+  let signatureUtils: SignatureUtils
 
   before(async () => {
-    ocean = await Ocean.getInstance(config)
-    web3 = (ocean as any).web3
+    signatureUtils = new SignatureUtils(web3, new Logger())
   })
 
   afterEach(() => {
@@ -31,14 +31,14 @@ describe('SignatureUtils', () => {
     })
 
     it('should sign a text as expected', async () => {
-      const signed = await ocean.utils.signature.signText(text, publicKey)
+      const signed = await signatureUtils.signText(text, publicKey)
 
       assert.equal(signed, signature)
       expect(personalSignSpy).to.have.been.called.with(text, publicKey)
     })
 
     it('should sign a text as expected using password', async () => {
-      const signed = await ocean.utils.signature.signText(text, publicKey, 'test')
+      const signed = await signatureUtils.signText(text, publicKey, 'test')
 
       assert.equal(signed, signature)
       expect(personalSignSpy).to.have.been.called.with(text, publicKey, 'test')
@@ -49,7 +49,7 @@ describe('SignatureUtils', () => {
     it('should recover the privateKey of a signed message', async () => {
       const personalRecoverSpy = spy.on(web3.eth.personal, 'ecRecover', () => publicKey)
 
-      const verifiedPublicKey = await ocean.utils.signature.verifyText(text, signature)
+      const verifiedPublicKey = await signatureUtils.verifyText(text, signature)
 
       assert.equal(publicKey, verifiedPublicKey)
       expect(personalRecoverSpy).to.have.been.called.with(text, signature)