diff --git a/packages/reservation-platform/src/app/printer/[printerId]/reserve/form.tsx b/packages/reservation-platform/src/app/printer/[printerId]/reserve/form.tsx
index 06d78dc..b9e61dc 100644
--- a/packages/reservation-platform/src/app/printer/[printerId]/reserve/form.tsx
+++ b/packages/reservation-platform/src/app/printer/[printerId]/reserve/form.tsx
@@ -158,7 +158,7 @@ export function PrinterReserveForm(props: PrinterReserveFormProps) {
 							</DialogClose>
 						</Then>
 					</If>
-					<Button type="submit" className="gap-2 flex items-center" disabled={lock}>
+					<Button type="submit" className="gap-2 flex items-center" disabled={isLocked}>
 						<CalendarPlusIcon className="w-4 h-4" />
 						<span>Reservieren</span>
 					</Button>