diff --git a/electrum/lnwatcher.py b/electrum/lnwatcher.py
index 6eaa55899..4c69cb12b 100644
--- a/electrum/lnwatcher.py
+++ b/electrum/lnwatcher.py
@@ -432,6 +432,7 @@ class LNWalletWatcher(LNWatcher):
         tx = sweep_info.gen_tx()
         if tx is None:
             self.logger.info(f'{name} could not claim output: {prevout}, dust')
+            return
         self.lnworker.wallet.set_label(tx.txid(), name)
         if broadcast:
             await self.network.try_broadcasting(tx, name)