diff --git a/inc/class-wooviet-vnd-paypal-standard.php b/inc/class-wooviet-vnd-paypal-standard.php
index 74f9861..c87d277 100644
--- a/inc/class-wooviet-vnd-paypal-standard.php
+++ b/inc/class-wooviet-vnd-paypal-standard.php
@@ -25,6 +25,8 @@ class WooViet_VND_PayPal_Standard {
 	 */
 	protected $paypal_currency = 'USD';
 
+	//@todo - declare two vars 
+
 	/**
 	 * WooViet_VND_PayPal_Standard constructor.
 	 *
@@ -44,8 +46,12 @@ class WooViet_VND_PayPal_Standard {
 		// Add the exchange rate info for this gateway in the checkout page before proceeding in the PayPal pages
 		add_filter( 'option_woocommerce_paypal_settings', array( $this, 'add_exchange_rate_info' ), 11 );
 
-		// Match currency of Paypal with local order
-		add_action( 'valid-paypal-standard-ipn-request', array( $this, 'match_currency_order' ), 10 );
+		// Match currency and amount between Paypal and WC Order
+		add_action( 'valid-paypal-standard-ipn-request', array( $this, 'match_order_currency_and_amount' ), 5 );
+
+		// Restore currency and amount for WC Order
+		add_action( 'valid-paypal-standard-ipn-request', array( $this, 'restore_order_currency_and_amount' ), 15 );
+		
 	}
 
 	/**
@@ -111,17 +117,78 @@ class WooViet_VND_PayPal_Standard {
 	}
 
 	/*	
-	* Match response currency from Paypal IPN with the order
+	* Match currency and amount from Paypal IPN with the order
 	* 
 	* Topic https://wordpress.org/support/topic/loi-order-bi-on-hold/
 	*
-	* @author 	Longkt
-	* @since 	1.4
+	* @author 	htdat
+	* @since 	1.4.3
 	*/
-	public function match_currency_order($posted) {
-		if($posted['mc_currency']) {
-			$posted['mc_currency'] = $order->get_currency();
-		}		
+	public function match_order_currency_and_amount($posted) {
+
+		$order = ! empty( $posted['custom'] ) ? $this->get_paypal_order( $posted['custom'] ) : false;
+
+		if ( $order ) {
+			$this->original_order_currency = $order->get_currency();
+			$this->original_order_total = $order->get_total();
+
+			$order->set_currency( $posted['mc_currency'] );
+			$order->set_total( $posted['mc_gross'] );
+
+			$order->save();
+		}
+
 	}
 
+	/*	
+	* Restore currency and amount of the order after the 'match_order_currency_and_amount' action
+	*
+	* @author 	htdat
+	* @since 	1.4.3
+	*/
+	public function restore_order_currency_and_amount($posted) {
+
+		$order = ! empty( $posted['custom'] ) ? $this->get_paypal_order( $posted['custom'] ) : false;
+
+		if ( $order ) {
+
+			$order->set_currency( $this->original_order_currency );
+			$order->set_total( $this->original_order_total );
+
+			$order->save();
+		}
+
+	}
+
+
+	/**
+	 * @see Grab this code from - can not call it directly https://github.com/woocommerce/woocommerce/blob/f5c2f89af6a9421af8edc2a4aa20d372e5be40f8/includes/gateways/paypal/includes/class-wc-gateway-paypal-response.php#L30 
+	 * 
+	 * @since 1.4.3 
+	 * @author htdat
+	 */
+	protected function get_paypal_order( $raw_custom ) {
+		// We have the data in the correct format, so get the order.
+		$custom = json_decode( $raw_custom );
+		if ( $custom && is_object( $custom ) ) {
+			$order_id  = $custom->order_id;
+			$order_key = $custom->order_key;
+		} else {
+			// Nothing was found.
+			WC_Gateway_Paypal::log( 'Order ID and key were not found in "custom".', 'error' );
+			return false;
+		}
+		$order = wc_get_order( $order_id );
+		if ( ! $order ) {
+			// We have an invalid $order_id, probably because invoice_prefix has changed.
+			$order_id = wc_get_order_id_by_order_key( $order_key );
+			$order    = wc_get_order( $order_id );
+		}
+		if ( ! $order || $order->get_order_key() !== $order_key ) {
+			WC_Gateway_Paypal::log( 'Order Keys do not match.', 'error' );
+			return false;
+		}
+		return $order;
+	}	
+
 }
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 59a46e9..6d091af 100644
--- a/readme.md
+++ b/readme.md
@@ -8,11 +8,16 @@ Xem phiên bản tiếng Việt tại đây https://vi.wordpress.org/plugins/woo
 
 ## Changelog
 
-### 1.4.2 - 2018.04.26 =
+### 1.4.3 - 2018.07.31
+
+* Fix fatal error when handling PayPal IPN #56
+* Other small improvements #53
+
+### 1.4.2 - 2018.04.26
 
 * Fix the fatal error when WooCommerce PayPal Express Checkout Gateway is not active. 
 
-### 1.4.1 - 2018.04.26 =
+### 1.4.1 - 2018.04.26
 
 * Fix the SVN command, missing some files on WP.org repo. 
 
diff --git a/readme.txt b/readme.txt
index 803cb49..b411e7d 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Tags: OnePay WooCommerce, OnePay Vietnam, WooCommerce Vietnam, vietnam, vietname
 Requires at least: 4.3
 Tested up to: 4.9.5
 Requires PHP: 5.6
-Stable tag: 1.4.2
+Stable tag: 1.4.3
 License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
 
@@ -73,22 +73,6 @@ Follow these steps to install and use the plugin:
 
 == Changelog ==
 
-= 1.4.2 - 2018.04.26 =
-
-* Fix the fatal error when WooCommerce PayPal Express Checkout Gateway is not active. 
-
-= 1.4.1 - 2018.04.26 =
-
-* Fix the SVN command, missing some files on WP.org repo. 
-
-= 1.4 - 2018.04.24 =
-
-* Fix the on-hold order issue with PayPal Standard.
-* Fix the issue in OnePay Domestic gateway when users cancel payment.
-* Add enhancement: arrange the address fields to the Vietnam standard: Country - Province - District - Address.
-* Add supporting VND for [the PayPal Express Checkout gateway](https://docs.woocommerce.com/document/paypal-express-checkout/).
-* Add "Settings" link in the Plugins list page when the plugin is active.
-
 See all change logs on [GitHub repo](https://github.com/htdat/woo-viet#changelog).
 
 == Upgrade Notice ==
diff --git a/woo-viet.php b/woo-viet.php
index 30e7dac..667056b 100644
--- a/woo-viet.php
+++ b/woo-viet.php
@@ -7,7 +7,7 @@
  * Author URI: https://profiles.wordpress.org/htdat
  * Text Domain: woo-viet
  * Domain Path: /languages
- * Version: 1.4.2
+ * Version: 1.4.3
  *
  * WC requires at least: 2.6
  * WC tested up to: 2.3