diff --git a/src/ShoppingcartServiceProvider.php b/src/ShoppingcartServiceProvider.php
index b5c6fda..7a92bd3 100644
--- a/src/ShoppingcartServiceProvider.php
+++ b/src/ShoppingcartServiceProvider.php
@@ -15,13 +15,19 @@ class ShoppingcartServiceProvider extends ServiceProvider
      */
     public function register()
     {
+        /* Bind Cart class to cart for Facade usage */
         $this->app->bind('cart', 'Gloudemans\Shoppingcart\Cart');
 
+        /* Determine where the config file is located */
         $config = __DIR__.'/Config/cart.php';
+
+        /* Use local config */
         $this->mergeConfigFrom($config, 'cart');
 
-        $this->publishes([__DIR__.'/Config/cart.php' => config_path('cart.php')], 'config');
+        /* Also allow publishing to overwrite local config */
+        $this->publishes([$config => config_path('cart.php')], 'config');
 
+        /* Publish included migrations */
         $this->publishes([
             realpath(__DIR__.'/Database/migrations') => $this->app->databasePath().'/migrations',
         ], 'migrations');
diff --git a/tests/CartTest.php b/tests/CartTest.php
index ed841d0..8d87006 100644
--- a/tests/CartTest.php
+++ b/tests/CartTest.php
@@ -30,7 +30,9 @@ class CartTest extends TestCase
      */
     protected function getPackageProviders($app)
     {
-        return [ShoppingcartServiceProvider::class];
+        return [
+            ShoppingcartServiceProvider::class
+        ];
     }
 
     /**
@@ -522,6 +524,9 @@ class CartTest extends TestCase
             'id' => 2,
         ]));
 
+        $cartItem = $cart->get('027c91341fd5cf4d2579b49c4b6a90da');
+        $this->assertEquals(config('cart.tax'), $cartItem->taxRate);
+
         $content = $cart->content();
 
         $this->assertInstanceOf(Collection::class, $content);
@@ -1120,7 +1125,7 @@ class CartTest extends TestCase
             'name' => 'First item',
         ]), 1);
         $cartItem = $cart->get('027c91341fd5cf4d2579b49c4b6a90da');
-        
+
         $cart->setDiscount('027c91341fd5cf4d2579b49c4b6a90da', 0.5);
 
         $this->assertEquals(0.5, $cartItem->discount);