diff --git a/electrum/lnworker.py b/electrum/lnworker.py
index 537859fef..5f402695d 100644
--- a/electrum/lnworker.py
+++ b/electrum/lnworker.py
@@ -2643,7 +2643,7 @@ class LNWallet(LNWorker):
                 self.logger.info(f"received unknown htlc_failed, probably from previous session (phash={payment_hash.hex()})")
                 key = payment_hash.hex()
                 invoice = self.wallet.get_invoice(key)
-                if self.get_invoice_status(invoice) != PR_UNPAID:
+                if invoice and self.get_invoice_status(invoice) != PR_UNPAID:
                     self.set_invoice_status(key, PR_UNPAID)
                     util.trigger_callback('payment_failed', self.wallet, key, '')