1 files changed, 4 insertions, 0 deletions
diff --git a/api-exchange.rst b/api-exchange.rst
index d3a759da..c9cf525e 100644
--- a/api-exchange.rst
+++ b/api-exchange.rst
@@ -1127,6 +1127,10 @@ Refunds
       // must be larger than the refund fee.
       refund_amount: Amount;
 
+      // Refund fee associated with the given coin.
+      // must be smaller than the refund amount.
+      refund_fee: Amount;
+
       // SHA-512 hash of the contact of the merchant with the customer.
       H_contract: HashCode;