diff --git a/app/assets/javascripts/admin/customers/controllers/customers_controller.js.coffee b/app/assets/javascripts/admin/customers/controllers/customers_controller.js.coffee
index 23bfb37738..7c70a8baa5 100644
--- a/app/assets/javascripts/admin/customers/controllers/customers_controller.js.coffee
+++ b/app/assets/javascripts/admin/customers/controllers/customers_controller.js.coffee
@@ -13,6 +13,20 @@ angular.module("admin.customers").controller "customersCtrl", ($scope, $q, Custo
       Customers.index({enterprise_id: $scope.CurrentShop.shop.id}).then (data) ->
         $scope.customers = data
 
+  $scope.checkForDuplicateCodes = ->
+    delete this.customer.code unless this.customer.code
+    this.duplicate = $scope.isDuplicateCode(this.customer.code)
+
+  $scope.isDuplicateCode = (code) ->
+    return false unless code
+    customers = $scope.findByCode(code)
+    customers.length > 1
+
+  $scope.findByCode = (code) ->
+    if $scope.customers
+      $scope.customers.filter (customer) ->
+        customer.code == code
+
   $scope.findTags = (query) ->
     defer = $q.defer()
     params =
diff --git a/app/models/customer.rb b/app/models/customer.rb
index 34f62a6aa6..b2141df9ec 100644
--- a/app/models/customer.rb
+++ b/app/models/customer.rb
@@ -5,8 +5,9 @@ class Customer < ActiveRecord::Base
   belongs_to :user, class_name: Spree.user_class
 
   before_validation :downcase_email
+  before_validation :empty_code
 
-  validates :code, uniqueness: { scope: :enterprise_id, allow_blank: true, allow_nil: true }
+  validates :code, uniqueness: { scope: :enterprise_id, allow_nil: true }
   validates :email, presence: true, uniqueness: { scope: :enterprise_id, message: I18n.t('validation_msg_is_associated_with_an_exising_customer') }
   validates :enterprise_id, presence: true
 
@@ -20,6 +21,10 @@ class Customer < ActiveRecord::Base
     email.andand.downcase!
   end
 
+  def empty_code
+    self.code = nil if code.blank?
+  end
+
   def associate_user
     self.user = user || Spree::User.find_by_email(email)
   end
diff --git a/app/views/admin/customers/index.html.haml b/app/views/admin/customers/index.html.haml
index c570632c64..02248923d1 100644
--- a/app/views/admin/customers/index.html.haml
+++ b/app/views/admin/customers/index.html.haml
@@ -64,7 +64,9 @@
             -# %input{ :type => "checkbox", :name => 'bulk', 'ng-model' => 'customer.checked' }
           %td.email{ 'ng-show' => 'columns.email.visible', "ng-bind" => '::customer.email' }
           %td.code{ 'ng-show' => 'columns.code.visible' }
-            %input{ :type => 'text', :name => 'code', :id => 'code', 'ng-model' => 'customer.code', 'obj-for-update' => "customer", "attr-for-update" => "code" }
+            %input{ type: 'text', name: 'code', ng: {model: 'customer.code', change: 'checkForDuplicateCodes()'}, "obj-for-update" => "customer", "attr-for-update" => "code" }
+            %i.icon-warning-sign{ ng: {if: 'duplicate'} }
+              = t('.duplicate_code')
           %td.tags{ 'ng-show' => 'columns.tags.visible' }
             .tag_watcher{ 'obj-for-update' => "customer", "attr-for-update" => "tag_list"}
               %tags_with_translation{ object: 'customer', 'find-tags' => 'findTags(query)' }
diff --git a/app/views/spree/admin/overview/_order_cycles.html.haml b/app/views/spree/admin/overview/_order_cycles.html.haml
index 8628837a47..1a00bd5102 100644
--- a/app/views/spree/admin/overview/_order_cycles.html.haml
+++ b/app/views/spree/admin/overview/_order_cycles.html.haml
@@ -6,9 +6,8 @@
       %a.three.columns.omega.icon-plus.button.blue{ href: "#{main_app.new_admin_order_cycle_path}" }
         = t "spree_admin_enterprises_create_new"
     - else
-      %a.with-tip{ title: t(:spree_admin_order_cycles_tip) }
+      %a{ "ofn-with-tip" => t(:spree_admin_order_cycles_tip) }
         = t "admin.whats_this"
-      %a{ "ofn-with-tip" => "Order cycles determine when and where your products are available to customers." } What's this?
   %div.seven.columns.alpha.list
     - if @order_cycle_count > 0
       %div.seven.columns.alpha.list-item
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 7fd49fc2fe..e103001337 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -113,6 +113,7 @@ en:
         valid_email_error: Please enter a valid email address
         add_a_new_customer_for: Add a new customer for %{shop_name}
         code: Code
+        duplicate_code: "This code is used already."
 
     products:
       bulk_edit:
diff --git a/spec/features/admin/customers_spec.rb b/spec/features/admin/customers_spec.rb
index 964608510d..d2f3b9b8bf 100644
--- a/spec/features/admin/customers_spec.rb
+++ b/spec/features/admin/customers_spec.rb
@@ -50,7 +50,7 @@ feature 'Customers' do
 
         within "tr#c_#{customer1.id}" do
           fill_in "code", with: "new-customer-code"
-          expect(page).to have_css "input#code.update-pending"
+          expect(page).to have_css "input[name=code].update-pending"
         end
         within "tr#c_#{customer1.id}" do
           find(:css, "tags-input .tags input").set "awesome\n"
@@ -59,7 +59,7 @@ feature 'Customers' do
         click_button "Save Changes"
 
         # Every says it updated
-        expect(page).to have_css "input#code.update-success"
+        expect(page).to have_css "input[name=code].update-success"
         expect(page).to have_css ".tag_watcher.update-success"
 
         # And it actually did
diff --git a/spec/features/consumer/shopping/shopping_spec.rb b/spec/features/consumer/shopping/shopping_spec.rb
index 1e69e97b1c..7dc9f474da 100644
--- a/spec/features/consumer/shopping/shopping_spec.rb
+++ b/spec/features/consumer/shopping/shopping_spec.rb
@@ -251,6 +251,8 @@ feature "As a consumer I want to shop with a distributor", js: true do
 
       describe "when a product goes out of stock just before it's added to the cart" do
         it "stops the attempt, shows an error message and refreshes the products asynchronously" do
+          expect(page).to have_content "Product"
+
           variant.update_attributes! on_hand: 0
 
           # -- Messaging
diff --git a/spec/features/consumer/shopping/variant_overrides_spec.rb b/spec/features/consumer/shopping/variant_overrides_spec.rb
index 92945a60be..b59cb6a613 100644
--- a/spec/features/consumer/shopping/variant_overrides_spec.rb
+++ b/spec/features/consumer/shopping/variant_overrides_spec.rb
@@ -193,7 +193,7 @@ feature "shopping with variant overrides defined", js: true do
     end
     
     place_order
-    page.should have_content "Your order has been processed successfully"
+    expect(page).to have_content "Your order has been processed successfully"
   end
 
   def click_checkout
diff --git a/spec/javascripts/unit/admin/customers/controllers/customers_controller_spec.js.coffee b/spec/javascripts/unit/admin/customers/controllers/customers_controller_spec.js.coffee
index 7854700dfd..ec884a284b 100644
--- a/spec/javascripts/unit/admin/customers/controllers/customers_controller_spec.js.coffee
+++ b/spec/javascripts/unit/admin/customers/controllers/customers_controller_spec.js.coffee
@@ -21,7 +21,7 @@ describe "CustomersCtrl", ->
     expect(scope.CurrentShop.shop).toEqual {}
 
   describe "setting the shop on scope", ->
-    customer = { id: 5, email: 'someone@email.com'}
+    customer = { id: 5, email: 'someone@email.com', code: 'a'}
     customers = [customer]
 
     beforeEach ->
@@ -33,6 +33,12 @@ describe "CustomersCtrl", ->
     it "retrievs the list of customers", ->
       expect(scope.customers).toDeepEqual customers
 
+    it "finds customers by code", ->
+      as = scope.findByCode('a')
+      expect(as).toDeepEqual customers
+      as = scope.findByCode('b')
+      expect(as).toDeepEqual []
+
     describe "scope.add", ->
       it "creates a new customer", ->
         email = "customer@example.org"
diff --git a/spec/models/customer_spec.rb b/spec/models/customer_spec.rb
index f2ac14e9b2..32e380f4d3 100644
--- a/spec/models/customer_spec.rb
+++ b/spec/models/customer_spec.rb
@@ -1,6 +1,23 @@
 require 'spec_helper'
 
 describe Customer, type: :model do
+  describe 'an existing customer' do
+    let(:customer) { create(:customer) }
+
+    it "saves its code" do
+      code = "code one"
+      customer.code = code
+      customer.save
+      expect(customer.code).to eq code
+    end
+
+    it "can remove its code" do
+      customer.code = ""
+      customer.save
+      expect(customer.code).to be nil
+    end
+  end
+
   describe 'creation callbacks' do
     let!(:user1) { create(:user) }
     let!(:user2) { create(:user) }
diff --git a/spec/support/request/checkout_workflow.rb b/spec/support/request/checkout_workflow.rb
index e08fb031da..4a0f37c0ea 100644
--- a/spec/support/request/checkout_workflow.rb
+++ b/spec/support/request/checkout_workflow.rb
@@ -8,7 +8,7 @@ module CheckoutWorkflow
   end
 
   def place_order
-    click_button "Place order now"
+    find("button", text: "Place order now").trigger "click"
   end
 
   def toggle_accordion(id)