diff --git a/database_upgrades/upgrade_cathrine_to_danielle.sql b/database_upgrades/upgrade_cathrine_to_danielle.sql
index c221633..840cf61 100644
--- a/database_upgrades/upgrade_cathrine_to_danielle.sql
+++ b/database_upgrades/upgrade_cathrine_to_danielle.sql
@@ -19,7 +19,7 @@ CREATE TABLE IF NOT EXISTS `vehicles_consumables` (
 
 ALTER TABLE `pitstop` ADD COLUMN `costs` decimal(5,2) DEFAULT NULL;
 
-ALTER TABLE `pitstop` CHANGE `litres` `amount`;
+ALTER TABLE `pitstop` CHANGE `litres` `amount` decimal(5,2) DEFAULT NULL;
 
 ALTER TABLE `pitstop` ADD COLUMN `consumable_id` int(11);
 ALTER TABLE `pitstop` ADD FOREIGN KEY (`consumable_id`) REFERENCES `consumable` (`id`);