diff --git a/backend/gestion/db/db_cancel_command.go b/backend/gestion/db/db_cancel_command.go
index 3c1e7455..cbcd7abe 100644
--- a/backend/gestion/db/db_cancel_command.go
+++ b/backend/gestion/db/db_cancel_command.go
@@ -78,9 +78,14 @@ func (d *Database) CancelCommandAtomic(commandID int, username, reason string, f
 
 		if err := tx.Exec(`
 			UPDATE products p
-			SET stock = stock + ci.quantite, updated_at = CURRENT_TIMESTAMP
-			FROM command_items ci
-			WHERE ci.command_id = ? AND ci.product_id = p.id`, commandID).Error; err != nil {
+			SET stock = stock + agg.total_qty, updated_at = CURRENT_TIMESTAMP
+			FROM (
+				SELECT product_id, SUM(quantite) AS total_qty
+				FROM command_items
+				WHERE command_id = ?
+				GROUP BY product_id
+			) agg
+			WHERE agg.product_id = p.id`, commandID).Error; err != nil {
 			return fmt.Errorf("erreur remboursement stock: %w", err)
 		}
 		log.Printf("✅ [CancelAtomic] Stock remboursé")
@@ -194,9 +199,14 @@ func (d *Database) DeleteCommandAtomic(commandID int, deletedBy, role string) er
 		if !stockAlreadyRestored {
 			if err := tx.Exec(`
                 UPDATE products p
-                SET stock = stock + ci.quantite, updated_at = CURRENT_TIMESTAMP
-                FROM command_items ci
-                WHERE ci.command_id = ? AND ci.product_id = p.id`, commandID).Error; err != nil {
+                SET stock = stock + agg.total_qty, updated_at = CURRENT_TIMESTAMP
+                FROM (
+                    SELECT product_id, SUM(quantite) AS total_qty
+                    FROM command_items
+                    WHERE command_id = ?
+                    GROUP BY product_id
+                ) agg
+                WHERE agg.product_id = p.id`, commandID).Error; err != nil {
 				log.Printf("⚠️ [DeleteAtomic] Erreur remboursement: %v", err)
 			} else {
 				log.Printf("✅ [DeleteAtomic] Stock remboursé (statut: %s)", cmdResult.Status)
@@ -337,9 +347,14 @@ func (d *Database) CancelCommandByAdminAtomic(commandID int) error {
 		if !slices.Contains(noRestoreStatuses, prevStatus) {
 			if err := tx.Exec(`
 				UPDATE products p
-				SET stock = stock + ci.quantite, updated_at = CURRENT_TIMESTAMP
-				FROM command_items ci
-				WHERE ci.command_id = ? AND ci.product_id = p.id`, commandID).Error; err != nil {
+				SET stock = stock + agg.total_qty, updated_at = CURRENT_TIMESTAMP
+				FROM (
+					SELECT product_id, SUM(quantite) AS total_qty
+					FROM command_items
+					WHERE command_id = ?
+					GROUP BY product_id
+				) agg
+				WHERE agg.product_id = p.id`, commandID).Error; err != nil {
 				return fmt.Errorf("erreur remboursement stock: %w", err)
 			}
 		}
@@ -381,9 +396,14 @@ func (d *Database) CancelDeliveryByLivreurAtomic(commandID int) (alreadyCancelle
 
 		if e := tx.Exec(`
 			UPDATE products p
-			SET stock = stock + ci.quantite, updated_at = CURRENT_TIMESTAMP
-			FROM command_items ci
-			WHERE ci.command_id = ? AND ci.product_id = p.id`, commandID).Error; e != nil {
+			SET stock = stock + agg.total_qty, updated_at = CURRENT_TIMESTAMP
+			FROM (
+				SELECT product_id, SUM(quantite) AS total_qty
+				FROM command_items
+				WHERE command_id = ?
+				GROUP BY product_id
+			) agg
+			WHERE agg.product_id = p.id`, commandID).Error; e != nil {
 			return fmt.Errorf("erreur remboursement stock: %w", e)
 		}
 		return nil