diff --git a/internal/pretix/order_placed.go b/internal/pretix/order_placed.go
index 7ef6105..69cd003 100644
--- a/internal/pretix/order_placed.go
+++ b/internal/pretix/order_placed.go
@@ -23,8 +23,8 @@ const (
 var adverbs = []string{" Außerdem ", " Zusätzlich ", " Weiterhin ", " Des Weiteren "}
 
 type categoryBin struct {
-	Cents	uint
-	Euros	uint
+	Cents	uint64
+	Euros	uint64
 	NumFree	uint
 	NumPaid	uint
 }