diff --git a/app/assets/javascripts/browsered/web-payments/helpers.js b/app/assets/javascripts/browsered/web-payments/helpers.js
index f5d50484a..96672e742 100644
--- a/app/assets/javascripts/browsered/web-payments/helpers.js
+++ b/app/assets/javascripts/browsered/web-payments/helpers.js
@@ -87,8 +87,8 @@ const getGooglePaymentsConfiguration = (paymentProvider) => {
         gateway: 'worldpay',
         gatewayMerchantId: window.googlePayGatewayMerchantID
       }),
-      // Providing 'worldpay' as the gateway with a blank gatewayMerchantId allows us to initiate a Google Pay payment
-      // when we're using the Google Pay test environment, which allows us to complete a Google Pay payment for sandbox
+      // In order to initiate a Google Pay payment in the Google Pay test environment without going to a real payment
+      // provider, the workaround is to specify ‘worldpay’ without a merchant id.
       ...(paymentProvider === 'sandbox' && {
         gateway: 'worldpay',
         gatewayMerchantId: ''
diff --git a/test/unit/clients/connector-client-sandbox-google-pay-authentication.pact.test.js b/test/unit/clients/connector-client-sandbox-google-pay-authentication.pact.test.js
index b08bc0670..922fca78f 100644
--- a/test/unit/clients/connector-client-sandbox-google-pay-authentication.pact.test.js
+++ b/test/unit/clients/connector-client-sandbox-google-pay-authentication.pact.test.js
@@ -55,8 +55,7 @@ describe('Connector Client - Google Pay authorisation API - Sandbox payment', fu
         connectorClient({ baseUrl: BASEURL }).chargeAuthWithWallet({
           chargeId: TEST_CHARGE_ID,
           wallet: 'google',
-          payload: payload,
-          paymentProvider: 'worldpay'
+          payload: payload
         }).then(res => {
           expect(res.body.status).to.be.equal('AUTHORISATION SUCCESS')
           done()
diff --git a/test/unit/clients/connector-client-worldpay-google-pay-authorisation.pact.test.js b/test/unit/clients/connector-client-worldpay-google-pay-authorisation.pact.test.js
index 378973805..a15802512 100644
--- a/test/unit/clients/connector-client-worldpay-google-pay-authorisation.pact.test.js
+++ b/test/unit/clients/connector-client-worldpay-google-pay-authorisation.pact.test.js
@@ -63,8 +63,7 @@ describe('Connector Client - Google Pay authorisation API - Worldpay payment', f
         connectorClient({ baseUrl: BASEURL }).chargeAuthWithWallet({
           chargeId: TEST_CHARGE_ID,
           wallet: 'google',
-          payload: payload,
-          paymentProvider: 'worldpay'
+          payload: payload
         }).then(res => {
           expect(res.body.status).to.be.equal('AUTHORISATION SUCCESS')
           done()
@@ -98,8 +97,7 @@ describe('Connector Client - Google Pay authorisation API - Worldpay payment', f
         connectorClient({ baseUrl: BASEURL }).chargeAuthWithWallet({
           chargeId: TEST_CHARGE_ID,
           wallet: 'google',
-          payload: payload,
-          paymentProvider: 'worldpay'
+          payload: payload
         }).then(res => {
           expect(res.body.status).to.be.equal('AUTHORISATION SUCCESS')
           done()
@@ -130,8 +128,7 @@ describe('Connector Client - Google Pay authorisation API - Worldpay payment', f
         connectorClient({ baseUrl: BASEURL }).chargeAuthWithWallet({
           chargeId: TEST_CHARGE_ID,
           wallet: 'google',
-          payload: payload,
-          paymentProvider: 'worldpay'
+          payload: payload
         }).then(res => {
           expect(res.body.status).to.be.equal('AUTHORISATION SUCCESS')
           done()