diff --git a/electrum/submarine_swaps.py b/electrum/submarine_swaps.py
index 51a0f806d..3f0ae4432 100644
--- a/electrum/submarine_swaps.py
+++ b/electrum/submarine_swaps.py
@@ -238,7 +238,7 @@ class SwapManager(Logger):
         assert self.lnwatcher
         privkey = os.urandom(32)
         pubkey = ECPrivkey(privkey).get_public_key_bytes(compressed=True)
-        lnaddr, invoice = await self.lnworker.create_invoice(lightning_amount, 'swap', expiry=3600*24)
+        lnaddr, invoice = await self.lnworker.create_invoice(lightning_amount*1000, 'swap', expiry=3600*24)
         payment_hash = lnaddr.paymenthash
         preimage = self.lnworker.get_preimage(payment_hash)
         request_data = {