diff --git a/packages/util/src/payments.ts b/packages/util/src/payments.ts
index 123c70913..9b924b0ca 100644
--- a/packages/util/src/payments.ts
+++ b/packages/util/src/payments.ts
@@ -270,7 +270,7 @@ export class PaymentsManager {
     vhash:string,
     vsig:string
   }> {
-    const voucher = await this.nitro.pay(destChannelId, Number(amount));
+    const voucher = await this.nitro.pay(destChannelId, amount);
     assert(voucher.amount);
 
     return {