diff --git a/db/routines/vn/procedures/itemShelving_add.sql b/db/routines/vn/procedures/itemShelving_add.sql
index a8f0b52507..bcd0eb519f 100644
--- a/db/routines/vn/procedures/itemShelving_add.sql
+++ b/db/routines/vn/procedures/itemShelving_add.sql
@@ -25,7 +25,7 @@ BEGIN
 	DECLARE vBuyFk INT;
 	DECLARE vShelvingFk INT;
 
-	SELECT id INTO vBuyFk 
+	SELECT id INTO vBuyFk
 		FROM buy WHERE id = vBarcode;
 
 	SELECT id INTO vShelvingFk
@@ -55,7 +55,8 @@ BEGIN
 				available = available + vQuantity
 			WHERE shelvingFk = vShelvingFk
 				AND itemFk = vItemFk
-				AND packing = vPacking;
+				AND packing = vPacking
+			LIMIT 1;
 
 	ELSE
 
@@ -76,6 +77,6 @@ BEGIN
 					id
 				FROM buy b
 				WHERE id = vBuyFk;
-	END IF; 
+	END IF;
 END$$
-DELIMITER ;
\ No newline at end of file
+DELIMITER ;