diff --git a/electrum/submarine_swaps.py b/electrum/submarine_swaps.py
index dd7d38327..233aa93a6 100644
--- a/electrum/submarine_swaps.py
+++ b/electrum/submarine_swaps.py
@@ -253,7 +253,7 @@ 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(
+        lnaddr, invoice = self.lnworker.create_invoice(
             amount_msat=lightning_amount_sat * 1000,
             message='swap',
             expiry=3600 * 24,