diff --git a/modules/order/commerce_order.install b/modules/order/commerce_order.install
index d29bb23..4e139e8 100644
--- a/modules/order/commerce_order.install
+++ b/modules/order/commerce_order.install
@@ -458,3 +458,11 @@ function commerce_order_update_7108() {
 
   return t('Schema for the commerce_order and commerce_order_revision tables has been updated.');
 }
+/**
+ * Lock the default Customer Billing Information for Order.
+ */
+function commerce_order_update_7109() {
+  db_query("UPDATE {field_config} SET locked = 1 WHERE field_name = 'commerce_customer_billing';");
+
+  return t('Customer Billing Information for Order locked.');
+}
\ No newline at end of file
diff --git a/modules/order/commerce_order.module b/modules/order/commerce_order.module
index d7707f1..00df918 100644
--- a/modules/order/commerce_order.module
+++ b/modules/order/commerce_order.module
@@ -232,6 +232,9 @@ function commerce_order_configure_customer_profile_type($customer_profile_type,
         'profile_type' => $customer_profile_type,
       ),
     );
+    if ($customer_profile_type == 'billing') {
+      $field += array('locked' => TRUE);
+    }
     $field = field_create_field($field);
   }