diff --git a/application/models/Sale.php b/application/models/Sale.php
index 63af16ec3..a58abc5d1 100644
--- a/application/models/Sale.php
+++ b/application/models/Sale.php
@@ -30,7 +30,7 @@ class Sale extends CI_Model
 		$decimals = totals_decimals();
 
 		$sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
-			. " THEN ROUND(sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.item_unit_price * sales_items.discount / 100), $decimals) "
+			. " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
 			. 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';
 
 		$sales_tax = "ROUND(IFNULL(SUM(sales_items_taxes.sales_tax), 0), $decimals)";
@@ -156,7 +156,7 @@ class Sale extends CI_Model
 		$decimals = totals_decimals();
 
 		$sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
-			. " THEN ROUND(sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.item_unit_price * sales_items.discount / 100), $decimals) "
+			. " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
 			. 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';
 
 		$sale_cost = 'SUM(sales_items.item_cost_price * sales_items.quantity_purchased)';
@@ -1139,7 +1139,7 @@ class Sale extends CI_Model
 		$decimals = totals_decimals();
 
 		$sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
-			. " THEN ROUND(sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.item_unit_price * sales_items.discount / 100), $decimals) "
+			. " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
 			. 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';
 
 		$sale_cost = 'SUM(sales_items.item_cost_price * sales_items.quantity_purchased)';
diff --git a/application/models/reports/Summary_report.php b/application/models/reports/Summary_report.php
index f2006d2b0..cf2643acb 100644
--- a/application/models/reports/Summary_report.php
+++ b/application/models/reports/Summary_report.php
@@ -24,7 +24,7 @@ abstract class Summary_report extends Report
 		$decimals = totals_decimals();
 
 		$sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
-			. " THEN ROUND(sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.item_unit_price * sales_items.discount / 100), $decimals) "
+			. " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
 			. 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';
 
 		$sale_cost = 'SUM(sales_items.item_cost_price * sales_items.quantity_purchased)';