diff --git a/db/routines/vn/procedures/stockBought_calculate.sql b/db/routines/vn/procedures/stockBought_calculate.sql
index c3b5a0dc6..c248d0deb 100644
--- a/db/routines/vn/procedures/stockBought_calculate.sql
+++ b/db/routines/vn/procedures/stockBought_calculate.sql
@@ -80,7 +80,7 @@ proc: BEGIN
 
 	UPDATE stockBought s
 			JOIN tStockSold ts ON ts.workerFk = s.workerFk
-				SET s.bought = IF(s.bought < ts.sold, ROUND(s.bought - ts.sold, 1), 0)
+				SET s.bought = IF(s.bought < ABS(ts.sold), 0, ROUND(s.bought - ABS(ts.sold), 1))
 		WHERE s.dated = vDated;
 
 	DROP TEMPORARY TABLE tCurrentData, tmp.item, tmp.buyUltimate, tStockSold;
diff --git a/modules/entry/back/methods/stock-bought/getStockBoughtDetail.js b/modules/entry/back/methods/stock-bought/getStockBoughtDetail.js
index 60b099682..723e04cb9 100644
--- a/modules/entry/back/methods/stock-bought/getStockBoughtDetail.js
+++ b/modules/entry/back/methods/stock-bought/getStockBoughtDetail.js
@@ -50,8 +50,11 @@ module.exports = Self => {
                         i.id itemFk,
                         i.name itemName,
                         ti.quantity,
-                        ROUND((ac.conversionCoefficient * (ti.quantity / b.packing) * buy_getVolume(b.id))
-                            / (vc.trolleyM3 * 1000000),1) volume,
+                        ROUND((ac.conversionCoefficient * 
+                                (ti.quantity / b.packing) * 
+                                buy_getVolume(b.id)
+                            ) / (vc.trolleyM3 * 1000000),
+                        2) volume,
                         b.packagingFk packagingFk,
                         b.packing
                     FROM tmp.item ti