diff --git a/lib/tx.js b/lib/tx.js
index 92e1dea6..4a1d9b3c 100644
--- a/lib/tx.js
+++ b/lib/tx.js
@@ -69,7 +69,7 @@ function cancel (txId) {
 }
 
 function customerHistory (customerId, thresholdDays) {
-  const sql = `SELECT * FROM (
+  const sql = `SELECT ch.id, ch.created, ch.fiat, ch.direction FROM (
     SELECT txIn.id, txIn.created, txIn.fiat, 'cashIn' AS direction,
       ((NOT txIn.send_confirmed) AND (txIn.created <= now() - interval $3)) AS expired
       FROM cash_in_txs txIn