diff --git a/templates/order/order-details-customer.php b/templates/order/order-details-customer.php
index 0a45e6d9214..d13cff7e30b 100644
--- a/templates/order/order-details-customer.php
+++ b/templates/order/order-details-customer.php
@@ -10,10 +10,9 @@
  * happen. When this occurs the version of the template file will be bumped and
  * the readme will list any important changes.
  *
- * @see 	https://docs.woocommerce.com/document/template-structure/
- * @author  WooThemes
+ * @see     https://docs.woocommerce.com/document/template-structure/
  * @package WooCommerce/Templates
- * @version 3.3.0
+ * @version 3.4.4
  */
 
 if ( ! defined( 'ABSPATH' ) ) {
@@ -30,7 +29,7 @@ $show_shipping = ! wc_ship_to_billing_address_only() && $order->needs_shipping_a
 
 	<?php endif; ?>
 
-	<h2 class="woocommerce-column__title"><?php _e( 'Billing address', 'woocommerce' ); ?></h2>
+	<h2 class="woocommerce-column__title"><?php esc_html_e( 'Billing address', 'woocommerce' ); ?></h2>
 
 	<address>
 		<?php echo wp_kses_post( $order->get_formatted_billing_address( __( 'N/A', 'woocommerce' ) ) ); ?>
@@ -49,7 +48,7 @@ $show_shipping = ! wc_ship_to_billing_address_only() && $order->needs_shipping_a
 		</div><!-- /.col-1 -->
 
 		<div class="woocommerce-column woocommerce-column--2 woocommerce-column--shipping-address col-2">
-			<h2 class="woocommerce-column__title"><?php _e( 'Shipping address', 'woocommerce' ); ?></h2>
+			<h2 class="woocommerce-column__title"><?php esc_html_e( 'Shipping address', 'woocommerce' ); ?></h2>
 			<address>
 				<?php echo wp_kses_post( $order->get_formatted_shipping_address( __( 'N/A', 'woocommerce' ) ) ); ?>
 			</address>
@@ -59,4 +58,6 @@ $show_shipping = ! wc_ship_to_billing_address_only() && $order->needs_shipping_a
 
 	<?php endif; ?>
 
+	<?php do_action( 'woocommerce_order_details_after_customer_details', $order ); ?>
+
 </section>