diff --git a/src/types.ts b/src/types.ts
index b04453767..9de769dfe 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -509,7 +509,7 @@ export type PayCoinInfo = Array<{ updatedCoin: CoinRecord, sig: CoinPaySig }>;
 
 
 export namespace Amounts {
-  export const fractionalBase = 1e8;
+  export const fractionalBase = 1e6;
 
   export interface Result {
     amount: AmountJson;