diff --git a/electrum/gui/qt/history_list.py b/electrum/gui/qt/history_list.py
index 3a3430b59..645388480 100644
--- a/electrum/gui/qt/history_list.py
+++ b/electrum/gui/qt/history_list.py
@@ -297,6 +297,8 @@ class HistoryList(MyTreeWidget, AcceptFileDragDrop):
         else:
             tx_hash = item.data(0, Qt.UserRole)
             tx = self.wallet.transactions.get(tx_hash)
+            if not tx:
+                return
             self.parent.show_transaction(tx)
 
     def update_labels(self):
diff --git a/electrum/gui/qt/utxo_list.py b/electrum/gui/qt/utxo_list.py
index 78e865360..f75ffb370 100644
--- a/electrum/gui/qt/utxo_list.py
+++ b/electrum/gui/qt/utxo_list.py
@@ -68,7 +68,8 @@ class UTXOList(MyTreeWidget):
         if len(selected) == 1:
             txid = selected[0].split(':')[0]
             tx = self.wallet.transactions.get(txid)
-            menu.addAction(_("Details"), lambda: self.parent.show_transaction(tx))
+            if tx:
+                menu.addAction(_("Details"), lambda: self.parent.show_transaction(tx))
 
         menu.exec_(self.viewport().mapToGlobal(position))