diff --git a/admin-dev/themes/template/orders/view.tpl b/admin-dev/themes/template/orders/view.tpl
index 2a2f2c5cd..c636d41bd 100755
--- a/admin-dev/themes/template/orders/view.tpl
+++ b/admin-dev/themes/template/orders/view.tpl
@@ -205,7 +205,7 @@
 				<hr />
 				{/if}
 
-				<p class="error" style="{if $order->total_paid_tax_incl == $total_paid}display: none;{/if}">
+				<p class="error" style="{if $orders_total_paid_tax_incl == $total_paid}display: none;{/if}">
 					{l s='Warning:'} {displayPrice price=$total_paid currency=$currency->id}
 					{l s='paid instead of'} <span class="total_paid">{displayPrice price=$order->total_paid_tax_incl currency=$currency->id}</span>
 				</p>
diff --git a/classes/order/Order.php b/classes/order/Order.php
index ee965d332..fdf88067d 100644
--- a/classes/order/Order.php
+++ b/classes/order/Order.php
@@ -1475,6 +1475,22 @@ class OrderCore extends ObjectModel
 
 		return Tools::ps_round($total, 2);
 	}
+	
+	/**
+	 * Get the sum of total_paid_tax_incl of the orders with similar reference
+	 *
+	 * @since 1.5.0.1
+	 * @return float
+	 */
+	public function getOrdersTotalPaid()
+	{
+		return Db::getInstance()->getValue('
+			SELECT SUM(total_paid_tax_incl)
+			FROM `'._DB_PREFIX_.'orders`
+			WHERE `reference` = '.(int)$this->reference.'
+			AND `id_cart` = '.(int)$this->id_cart
+		);
+	}
 
 	/**
 	 *
diff --git a/controllers/admin/AdminOrdersController.php b/controllers/admin/AdminOrdersController.php
index 060512aa8..82b871d79 100755
--- a/controllers/admin/AdminOrdersController.php
+++ b/controllers/admin/AdminOrdersController.php
@@ -1024,6 +1024,7 @@ class AdminOrdersControllerCore extends AdminController
 			'customerStats' => $customer->getStats(),
 			'products' => $products,
 			'discounts' => $order->getCartRules(),
+			'orders_total_paid_tax_incl' => $order->getOrdersTotalPaid(), // Get the sum of total_paid_tax_incl of the order with similar reference
 			'total_paid' => $order->getTotalPaid(),
 			'returns' => OrderReturn::getOrdersReturn($order->id_customer, $order->id),
 			'slips' => OrderSlip::getOrdersSlip($order->id_customer, $order->id),