diff --git a/electrum/submarine_swaps.py b/electrum/submarine_swaps.py
index b022986cc..f0198696d 100644
--- a/electrum/submarine_swaps.py
+++ b/electrum/submarine_swaps.py
@@ -270,7 +270,7 @@ class SwapManager(Logger):
             preimage = preimage,
             prepay_hash = None,
             lockup_address = lockup_address,
-            onchain_amount = onchain_amount,
+            onchain_amount = expected_onchain_amount,
             lightning_amount = lightning_amount,
             is_reverse = False,
             is_redeemed = False,