diff --git a/electrum/gui/qt/lightning_tx_dialog.py b/electrum/gui/qt/lightning_tx_dialog.py
index 34a9ffacf..845aa1d4a 100644
--- a/electrum/gui/qt/lightning_tx_dialog.py
+++ b/electrum/gui/qt/lightning_tx_dialog.py
@@ -34,7 +34,7 @@ from electrum.i18n import _
 from electrum.lnworker import PaymentDirection
 from electrum.invoices import Invoice
 
-from .util import WindowModalDialog, ShowQRLineEdit, ColorScheme, Buttons, CloseButton, font_height
+from .util import WindowModalDialog, ShowQRLineEdit, ColorScheme, Buttons, CloseButton, font_height, ButtonsLineEdit
 from .qrtextedit import ShowQRTextEdit
 
 if TYPE_CHECKING:
@@ -46,7 +46,7 @@ class LightningTxDialog(WindowModalDialog):
 
     def __init__(self, parent: 'ElectrumWindow', tx_item: dict):
         WindowModalDialog.__init__(self, parent, _("Lightning Payment"))
-        self.parent = parent
+        self.main_window = parent
         self.config = parent.config
         self.is_sent = tx_item['direction'] == PaymentDirection.SENT
         self.label = tx_item['label']
@@ -55,22 +55,34 @@ class LightningTxDialog(WindowModalDialog):
         self.payment_hash = tx_item['payment_hash']
         self.preimage = tx_item['preimage']
         self.invoice = ""
-        invoice = self.parent.wallet.get_invoice(self.payment_hash)  # only check outgoing invoices
+        invoice = self.main_window.wallet.get_invoice(self.payment_hash)  # only check outgoing invoices
         if invoice:
             assert invoice.is_lightning(), f"{self.invoice!r}"
             self.invoice = invoice.lightning_invoice
         self.setMinimumWidth(700)
         vbox = QVBoxLayout()
         self.setLayout(vbox)
-        amount_str = self.parent.format_amount_and_units(self.amount, timestamp=self.timestamp)
+        amount_str = self.main_window.format_amount_and_units(self.amount, timestamp=self.timestamp)
         vbox.addWidget(QLabel(_("Amount") + f": {amount_str}"))
         if self.is_sent:
             fee_msat = tx_item['fee_msat']
             fee_sat = Decimal(fee_msat) / 1000 if fee_msat is not None else None
-            fee_str = self.parent.format_amount_and_units(fee_sat, timestamp=self.timestamp)
+            fee_str = self.main_window.format_amount_and_units(fee_sat, timestamp=self.timestamp)
             vbox.addWidget(QLabel(_("Fee") + f": {fee_str}"))
         time_str = datetime.datetime.fromtimestamp(self.timestamp).isoformat(' ')[:-3]
         vbox.addWidget(QLabel(_("Date") + ": " + time_str))
+        self.tx_desc_label = QLabel(_("Description:"))
+        vbox.addWidget(self.tx_desc_label)
+        self.tx_desc = ButtonsLineEdit(self.label)
+        def on_edited():
+            text = self.tx_desc.text()
+            if self.main_window.wallet.set_label(self.payment_hash, text):
+                self.main_window.history_list.update()
+                self.main_window.utxo_list.update()
+                self.main_window.labels_changed_signal.emit()
+        self.tx_desc.editingFinished.connect(on_edited)
+        self.tx_desc.addCopyButton()
+        vbox.addWidget(self.tx_desc)
         vbox.addWidget(QLabel(_("Payment hash") + ":"))
         self.hash_e = ShowQRLineEdit(self.payment_hash, self.config, title=_("Payment hash"))
         vbox.addWidget(self.hash_e)
@@ -83,4 +95,6 @@ class LightningTxDialog(WindowModalDialog):
             self.invoice_e.setMaximumHeight(max(150, 10 * font_height()))
             self.invoice_e.addCopyButton()
             vbox.addWidget(self.invoice_e)
-        vbox.addLayout(Buttons(CloseButton(self)))
+        self.close_button = CloseButton(self)
+        vbox.addLayout(Buttons(self.close_button))
+        self.close_button.setFocus()