diff --git a/app/assets/javascripts/webchat/library.js b/app/assets/javascripts/webchat/library.js
index 738191702..e3417edfd 100644
--- a/app/assets/javascripts/webchat/library.js
+++ b/app/assets/javascripts/webchat/library.js
@@ -24,7 +24,6 @@
     var webchatStateClass   = 'js-webchat-advisers-'
     var intervalID          = null
     var lastRecordedState   = null
-    var response_datatype    = $el.attr('data-redirect')
 
     function init () {
       if (!availabilityUrl || !openUrl) throw 'urls for webchat not defined'
@@ -35,7 +34,7 @@
 
     function handleOpenChat (evt) {
       evt.preventDefault()
-      this.dataset.redirect =="true" ? window.location.href = openUrl : global.open(openUrl, 'newwin', 'width=366,height=516')
+      this.dataset.redirect == "true" ? window.location.href = openUrl : global.open(openUrl, 'newwin', 'width=366,height=516')
       trackEvent('opened')
     }
 
@@ -43,7 +42,6 @@
       var ajaxConfig = {
         url: availabilityUrl,
         type: 'GET',
-        dataType: response_datatype,
         timeout: AJAX_TIMEOUT,
         success: apiSuccess,
         error: apiError
diff --git a/app/models/webchat.rb b/app/models/webchat.rb
index b3ebecd32..d25f2d3eb 100644
--- a/app/models/webchat.rb
+++ b/app/models/webchat.rb
@@ -5,14 +5,13 @@ class Webchat
 
   validates_presence_of :base_path, :open_url, :availability_url
 
-  attr_reader :base_path, :open_url, :availability_url, :open_url_redirect, :availability_payload_format
+  attr_reader :base_path, :open_url, :availability_url, :open_url_redirect
 
   def initialize(attrs)
     @base_path = attrs["base_path"] if attrs["base_path"].present?
     @open_url = attrs["open_url"] if attrs["open_url"].present?
     @availability_url = attrs["availability_url"] if attrs["availability_url"].present?
     @open_url_redirect = attrs.fetch("open_url_redirect", nil)
-    @availability_payload_format = attrs.fetch("availability_payload_format", nil)
     validate!
   end
 
diff --git a/app/views/shared/_webchat.html.erb b/app/views/shared/_webchat.html.erb
index a67af394f..d0261df32 100644
--- a/app/views/shared/_webchat.html.erb
+++ b/app/views/shared/_webchat.html.erb
@@ -4,7 +4,7 @@
   <span class="js-webchat"
     data-availability-url="<%= @content_item.webchat.availability_url %>"
     data-open-url="<%= @content_item.webchat.open_url %>"
-    data-redirect="<%=  @content_item.webchat.availability_payload_format.present? ? @content_item.webchat.availability_payload_format : 'jsonp' %>"
+    data-redirect="<%=  @content_item.webchat.open_url_redirect.present? ? 'true': 'false' %>"
   >
     <% if webchat_unavailable? %>
       <%= unavailability_message %>
diff --git a/spec/javascripts/webchat.spec.js b/spec/javascripts/webchat.spec.js
index 436cf4324..42b8f6fe5 100644
--- a/spec/javascripts/webchat.spec.js
+++ b/spec/javascripts/webchat.spec.js
@@ -10,7 +10,7 @@ describe('Webchat', function () {
   GOVUK.analytics.trackEvent = function () {}
   var CHILD_BENEFIT_API_URL = 'https://hmrc-uk.digital.nuance.com/tagserver/launch/agentAvailability?agentGroupID=10006859&siteID=10006719&businessUnitID=19001235'
 
-  var INSERTION_HOOK = '<div class="js-webchat" data-availability-url="' + CHILD_BENEFIT_API_URL + '" data-open-url="' + CHILD_BENEFIT_API_URL + '" data-redirect="jsonp">' +
+  var INSERTION_HOOK = '<div class="js-webchat" data-availability-url="' + CHILD_BENEFIT_API_URL + '" data-open-url="' + CHILD_BENEFIT_API_URL + '" data-redirect="true">' +
     '<div class="js-webchat-advisers-error">Error</div>' +
     '<div class="js-webchat-advisers-unavailable hidden">Unavailable</div>' +
     '<div class="js-webchat-advisers-busy hidden">Busy</div>' +
@@ -68,7 +68,7 @@ describe('Webchat', function () {
       mount()
       expect(
         $.ajax
-      ).toHaveBeenCalledWith({ url: CHILD_BENEFIT_API_URL, type: 'GET', dataType: "jsonp" ,timeout: jasmine.any(Number), success: jasmine.any(Function), error: jasmine.any(Function) })
+      ).toHaveBeenCalledWith({ url: CHILD_BENEFIT_API_URL, type: 'GET' ,timeout: jasmine.any(Number), success: jasmine.any(Function), error: jasmine.any(Function) })
     })
 
     it('should inform user whether advisors are available', function () {