diff --git a/src/datatokens/Datatokens.ts b/src/datatokens/Datatokens.ts
index d5dd1c05..648aa8a9 100644
--- a/src/datatokens/Datatokens.ts
+++ b/src/datatokens/Datatokens.ts
@@ -3,7 +3,7 @@ import { AbiItem } from 'web3-utils/types'
 
 import defaultFactoryABI from '@oceanprotocol/contracts/artifacts/DTFactory.json'
 import defaultDatatokensABI from '@oceanprotocol/contracts/artifacts/DataTokenTemplate.json'
-
+import { Logger } from '../utils'
 import wordListDefault from '../data/words.json'
 import { TransactionReceipt } from 'web3-core'
 import BigNumber from 'bignumber.js'
@@ -16,7 +16,7 @@ export class DataTokens {
   public factoryABI: AbiItem | AbiItem[]
   public datatokensABI: AbiItem | AbiItem[]
   public web3: Web3
-
+  private logger: Logger
   /**
    * Instantiate DataTokens (independently of Ocean).
    * @param {String} factoryAddress
@@ -28,12 +28,14 @@ export class DataTokens {
     factoryAddress: string,
     factoryABI: AbiItem | AbiItem[],
     datatokensABI: AbiItem | AbiItem[],
-    web3: Web3
+    web3: Web3,
+    logger: Logger
   ) {
     this.factoryAddress = factoryAddress
     this.factoryABI = factoryABI || (defaultFactoryABI.abi as AbiItem[])
     this.datatokensABI = datatokensABI || (defaultDatatokensABI.abi as AbiItem[])
     this.web3 = web3
+    this.logger = logger
   }
 
   /**
@@ -108,7 +110,7 @@ export class DataTokens {
     try {
       tokenAddress = trxReceipt.events.TokenCreated.returnValues[0]
     } catch (e) {
-      console.error(`ERROR: Failed to create datatoken : ${e.message}`)
+      this.logger.error(`ERROR: Failed to create datatoken : ${e.message}`)
     }
     return tokenAddress
   }
@@ -373,7 +375,7 @@ export class DataTokens {
         .send({ from: address, gas: 600000 })
       return trxReceipt
     } catch (e) {
-      console.error(`ERROR: Failed to start order : ${e.message}`)
+      this.logger.error(`ERROR: Failed to start order : ${e.message}`)
       return null
     }
   }
diff --git a/src/ocean/Ocean.ts b/src/ocean/Ocean.ts
index 56176bc2..05afb676 100644
--- a/src/ocean/Ocean.ts
+++ b/src/ocean/Ocean.ts
@@ -50,7 +50,8 @@ export class Ocean extends Instantiable {
       instanceConfig.config.factoryAddress,
       instanceConfig.config.factoryABI,
       instanceConfig.config.datatokensABI,
-      instanceConfig.config.web3Provider
+      instanceConfig.config.web3Provider,
+      instanceConfig.logger
     )
     instance.pool = new OceanPool(
       instanceConfig.config.web3Provider,
diff --git a/test/unit/Datatokens.test.ts b/test/unit/Datatokens.test.ts
index f760f04c..a4de8765 100644
--- a/test/unit/Datatokens.test.ts
+++ b/test/unit/Datatokens.test.ts
@@ -2,7 +2,7 @@ import { assert } from 'chai'
 import { AbiItem } from 'web3-utils/types'
 import { TestContractHandler } from '../TestContractHandler'
 import { DataTokens } from '../../src/datatokens/Datatokens'
-
+import { LoggerInstance } from '../../src/utils'
 import Web3 from 'web3'
 import factory from '@oceanprotocol/contracts/artifacts/DTFactory.json'
 import datatokensTemplate from '@oceanprotocol/contracts/artifacts/DataTokenTemplate.json'
@@ -38,7 +38,8 @@ describe('DataTokens', () => {
       contracts.factoryAddress,
       factory.abi as AbiItem[],
       datatokensTemplate.abi as AbiItem[],
-      web3
+      web3,
+      LoggerInstance
     )
     assert(datatoken !== null)
   })
diff --git a/test/unit/balancer/Balancer.test.ts b/test/unit/balancer/Balancer.test.ts
index 3e6e2f25..4bcc2592 100644
--- a/test/unit/balancer/Balancer.test.ts
+++ b/test/unit/balancer/Balancer.test.ts
@@ -75,7 +75,8 @@ describe('Balancer flow', () => {
       contracts.factoryAddress,
       factory.abi as AbiItem[],
       datatokensTemplate.abi as AbiItem[],
-      web3
+      web3,
+      LoggerInstance
     )
     assert(datatoken !== null)
   })
@@ -90,7 +91,8 @@ describe('Balancer flow', () => {
       contracts.factoryAddress,
       factory.abi as AbiItem[],
       datatokensTemplate.abi as AbiItem[],
-      web3
+      web3,
+      LoggerInstance
     )
     oceanTokenAddress = await oceandatatoken.create(
       blob,
diff --git a/test/unit/exchanges/FixedPriceExchange.test.ts b/test/unit/exchanges/FixedPriceExchange.test.ts
index 1b6fd336..6dabf765 100644
--- a/test/unit/exchanges/FixedPriceExchange.test.ts
+++ b/test/unit/exchanges/FixedPriceExchange.test.ts
@@ -10,6 +10,7 @@ import factory from '@oceanprotocol/contracts/artifacts/DTFactory.json'
 import datatokensTemplate from '@oceanprotocol/contracts/artifacts/DataTokenTemplate.json'
 
 import FixedRateExchangeContract = require('@oceanprotocol/contracts/artifacts/FixedRateExchange.json')
+import { Logger } from '../../../src/lib'
 const web3 = new Web3('http://127.0.0.1:8545')
 
 describe('FixedRateExchange flow', () => {
@@ -66,7 +67,8 @@ describe('FixedRateExchange flow', () => {
       contracts.factoryAddress,
       factory.abi as AbiItem[],
       datatokensTemplate.abi as AbiItem[],
-      web3
+      web3,
+      LoggerInstance
     )
     assert(datatoken !== null)
   })
@@ -89,7 +91,8 @@ describe('FixedRateExchange flow', () => {
       contracts.factoryAddress,
       factory.abi as AbiItem[],
       datatokensTemplate.abi as AbiItem[],
-      web3
+      web3,
+      LoggerInstance
     )
     oceanTokenAddress = await oceandatatoken.create(
       blob,
@@ -208,7 +211,6 @@ describe('FixedRateExchange flow', () => {
     if (consoleDebug) console.log('Bob ocean balance:' + balance)
   })
   it('Alice should update the rate', async () => {
-    // console.log(await FixedRateClass.getLogger())
     const tx = await FixedRateClass.setRate(aliceExchangeId, updatedPriceRate, alice)
     assert(tx !== null)
   })