diff --git a/app/controllers/mappings_controller.rb b/app/controllers/mappings_controller.rb
index 27567eb4..c20b0153 100644
--- a/app/controllers/mappings_controller.rb
+++ b/app/controllers/mappings_controller.rb
@@ -15,8 +15,6 @@ class MappingsController < ApplicationController
   def create
     @mapping = Mapping.new(mapping_params)
 
-    @mapping.map.touch(:updated_at)
-
     if @mapping.save
       render json: @mapping, status: :created
     else
@@ -28,8 +26,6 @@ class MappingsController < ApplicationController
   def update
     @mapping = Mapping.find(params[:id])
 
-    @mapping.map.touch(:updated_at)
-
     if @mapping.update_attributes(mapping_params)
       head :no_content
     else
@@ -44,8 +40,6 @@ class MappingsController < ApplicationController
 
     @mapping.destroy
 
-    @map.touch(:updated_at)
-
     head :no_content 
   end
 
diff --git a/app/models/mapping.rb b/app/models/mapping.rb
index 680dbf8a..425f358d 100644
--- a/app/models/mapping.rb
+++ b/app/models/mapping.rb
@@ -4,7 +4,7 @@ class Mapping < ActiveRecord::Base
   scope :synapsemapping, -> { where(mappable_type: :Synapse) }
 
   belongs_to :mappable, polymorphic: true
-  belongs_to :map, :class_name => "Map", :foreign_key => "map_id"
+  belongs_to :map, :class_name => "Map", :foreign_key => "map_id", touch: true
   belongs_to :user
 
   validates :xloc, presence: true
diff --git a/spec/controllers/mappings_controller_spec.rb b/spec/controllers/mappings_controller_spec.rb
index b2568b51..ffc9bac9 100644
--- a/spec/controllers/mappings_controller_spec.rb
+++ b/spec/controllers/mappings_controller_spec.rb
@@ -1,7 +1,9 @@
 require 'rails_helper'
 
 RSpec.describe MappingsController, type: :controller do
-  let(:mapping) { create(:mapping) }
+  let!(:mapping) { create(:mapping) }
+  let(:valid_attributes) { mapping.attributes.except('id') }
+  let(:invalid_attributes) { { xloc: 0 } }
   before :each do
     sign_in
   end
@@ -38,15 +40,12 @@ RSpec.describe MappingsController, type: :controller do
 
   describe 'PUT #update' do
     context 'with valid params' do
-      let(:new_attributes) do
-        skip('Add a hash of attributes valid for your model')
-      end
+      let(:new_attributes) { build(:mapping_random_location).attributes.except('id') }
 
       it 'updates the requested mapping' do
         put :update,
             { id: mapping.to_param, mapping: new_attributes }
         mapping.reload
-        skip('Add assertions for updated state')
       end
 
       it 'assigns the requested mapping as @mapping' do
diff --git a/spec/factories/mappings.rb b/spec/factories/mappings.rb
index 479a3a16..bed0b754 100644
--- a/spec/factories/mappings.rb
+++ b/spec/factories/mappings.rb
@@ -5,5 +5,10 @@ FactoryGirl.define do
     map
     user
     association :mappable, factory: :topic
+
+    factory :mapping_random_location do
+      xloc { rand(-100...100) }
+      yloc { rand(-100...100) }
+    end
   end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 9cab52e4..842badd5 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,5 +1,4 @@
 require 'support/controller_helpers'
-require 'devise'
 
 RSpec.configure do |config|
   config.expect_with :rspec do |expectations|
@@ -9,9 +8,4 @@ RSpec.configure do |config|
   config.mock_with :rspec do |mocks|
     mocks.verify_partial_doubles = true
   end
-
-  RSpec.configure do |config|
-    config.include Devise::TestHelpers, type: :controller
-    config.extend ControllerHelpers, type: :controller
-  end
 end
diff --git a/spec/support/controller_helpers.rb b/spec/support/controller_helpers.rb
index 5fe34854..dc301e11 100644
--- a/spec/support/controller_helpers.rb
+++ b/spec/support/controller_helpers.rb
@@ -1,4 +1,7 @@
 # https://github.com/plataformatec/devise/wiki/How-To:-Stub-authentication-in-controller-specs
+
+require 'devise'
+
 module ControllerHelpers
   # rubocop:disable Metrics/AbcSize
   def sign_in(user = create(:user))
@@ -15,3 +18,8 @@ module ControllerHelpers
   end
   # rubocop:enable Metrics/AbcSize
 end
+
+RSpec.configure do |config|
+  config.include Devise::TestHelpers, :type => :controller
+  config.include ControllerHelpers, :type => :controller
+end