diff --git a/migrations/1617742522808-zeroConfLimit-migrate.js b/migrations/1617742522808-zeroConfLimit-migrate.js
new file mode 100644
index 00000000..dd59de6a
--- /dev/null
+++ b/migrations/1617742522808-zeroConfLimit-migrate.js
@@ -0,0 +1,40 @@
+const _ = require('lodash/fp')
+var db = require('../lib/db')
+const settingsLoader = require('../lib/new-settings-loader')
+const configManager = require('../lib/new-config-manager')
+
+exports.up = function (next) {
+  db.tx(async t => {
+    let min = Infinity
+    const sp = settingsLoader.loadLatest()
+    const mp = t.any('SELECT device_id FROM devices')
+    const [{ config }, machines] = await Promise.all([sp, mp])
+    const cryptoCurrencies = config.locale_cryptoCurrencies
+    _.forEach(o => {
+      const machineId = o.device_id
+      const cashOutConfig = configManager.getCashOut(machineId, config)
+      const zeroConfLimit = cashOutConfig.zeroConfLimit || Infinity
+      if (zeroConfLimit < min) {
+        min = zeroConfLimit
+      }
+    }, machines)
+    if (min === Infinity) {
+      min = 0
+    }
+    _.forEach(cryptoCode => {
+      const walletConfig = configManager.getWalletSettings(cryptoCode, config)
+      const zeroConfLimit = walletConfig.zeroConfLimit || null
+      const key = `wallets_${cryptoCode}_zeroConfLimit`
+      if (!zeroConfLimit) {
+        config[key] = Number(min)
+      }
+    }, cryptoCurrencies)
+    return settingsLoader.saveConfig(config)
+  })
+    .then(() => next())
+    .catch(err => next(err))
+}
+
+exports.down = function (next) {
+  next()
+}