diff --git a/electrum/daemon.py b/electrum/daemon.py
index ad1c2a854..0db918c4b 100644
--- a/electrum/daemon.py
+++ b/electrum/daemon.py
@@ -319,12 +319,12 @@ class Daemon(DaemonThread):
         DaemonThread.stop(self)
 
     def init_gui(self, config, plugins):
+        threading.current_thread().setName('GUI')
         gui_name = config.get('gui', 'qt')
         if gui_name in ['lite', 'classic']:
             gui_name = 'qt'
         gui = __import__('electrum.gui.' + gui_name, fromlist=['electrum'])
         self.gui = gui.ElectrumGui(config, self, plugins)
-        threading.current_thread().setName('GUI')
         try:
             self.gui.main()
         except BaseException as e:
diff --git a/electrum/gui/qt/__init__.py b/electrum/gui/qt/__init__.py
index 83f21cc25..885684ea1 100644
--- a/electrum/gui/qt/__init__.py
+++ b/electrum/gui/qt/__init__.py
@@ -97,6 +97,7 @@ class ElectrumGui(PrintError):
             QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
         if hasattr(QGuiApplication, 'setDesktopFileName'):
             QGuiApplication.setDesktopFileName('electrum.desktop')
+        self.gui_thread = threading.current_thread()
         self.config = config
         self.daemon = daemon
         self.plugins = plugins
diff --git a/electrum/gui/qt/history_list.py b/electrum/gui/qt/history_list.py
index f22b7f6ae..aefd4e2cf 100644
--- a/electrum/gui/qt/history_list.py
+++ b/electrum/gui/qt/history_list.py
@@ -27,10 +27,12 @@ import webbrowser
 import datetime
 from datetime import date
 from typing import TYPE_CHECKING, Tuple, Dict
+import threading
 
 from electrum.address_synchronizer import TX_HEIGHT_LOCAL
 from electrum.i18n import _
-from electrum.util import block_explorer_URL, profiler, print_error, TxMinedInfo
+from electrum.util import (block_explorer_URL, profiler, print_error, TxMinedInfo,
+                           PrintError)
 
 from .util import *
 
@@ -67,7 +69,8 @@ class HistorySortModel(QSortFilterProxyModel):
             return False
         return item1.value() < item2.value()
 
-class HistoryModel(QAbstractItemModel):
+class HistoryModel(QAbstractItemModel, PrintError):
+
     def __init__(self, parent):
         super().__init__(parent)
         self.parent = parent
@@ -171,6 +174,8 @@ class HistoryModel(QAbstractItemModel):
         return self.parent.wallet.get_addresses()
 
     def refresh(self, reason: str):
+        self.print_error(f"refreshing... reason: {reason}")
+        assert self.parent.gui_thread == threading.current_thread(), 'must be called from GUI thread'
         selected = self.parent.history_list.selectionModel().currentIndex()
         selected_row = None
         if selected:
@@ -288,7 +293,7 @@ class HistoryList(MyTreeView, AcceptFileDragDrop):
                     return True
             return False
 
-    def __init__(self, parent, model):
+    def __init__(self, parent, model: HistoryModel):
         super().__init__(parent, self.create_menu, 2)
         self.hm = model
         self.proxy = HistorySortModel(self)
diff --git a/electrum/gui/qt/main_window.py b/electrum/gui/qt/main_window.py
index 087e14e8a..f5a7b4207 100644
--- a/electrum/gui/qt/main_window.py
+++ b/electrum/gui/qt/main_window.py
@@ -114,6 +114,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
 
         self.gui_object = gui_object
         self.config = config = gui_object.config  # type: SimpleConfig
+        self.gui_thread = gui_object.gui_thread
 
         self.setup_exception_hook()
 
diff --git a/electrum/wallet.py b/electrum/wallet.py
index 64cbb80b9..0d58f44d3 100644
--- a/electrum/wallet.py
+++ b/electrum/wallet.py
@@ -45,7 +45,7 @@ from .util import (NotEnoughFunds, PrintError, UserCancelled, profiler,
                    format_satoshis, format_fee_satoshis, NoDynamicFeeEstimates,
                    WalletFileException, BitcoinException,
                    InvalidPassword, format_time, timestamp_to_datetime, Satoshis,
-                   Fiat, bfh, bh2u)
+                   Fiat, bfh, bh2u, TxMinedInfo)
 from .bitcoin import (COIN, TYPE_ADDRESS, is_address, address_to_script,
                       is_minikey, relayfee, dust_threshold)
 from .version import *
@@ -523,11 +523,11 @@ class Abstract_Wallet(AddressSynchronizer):
             return ', '.join(labels)
         return ''
 
-    def get_tx_status(self, tx_hash, tx_mined_status):
+    def get_tx_status(self, tx_hash, tx_mined_info: TxMinedInfo):
         extra = []
-        height = tx_mined_status.height
-        conf = tx_mined_status.conf
-        timestamp = tx_mined_status.timestamp
+        height = tx_mined_info.height
+        conf = tx_mined_info.conf
+        timestamp = tx_mined_info.timestamp
         if conf == 0:
             tx = self.transactions.get(tx_hash)
             if not tx:
@@ -554,7 +554,7 @@ class Abstract_Wallet(AddressSynchronizer):
             elif height == TX_HEIGHT_UNCONFIRMED:
                 status = 0
             else:
-                status = 2
+                status = 2  # not SPV verified
         else:
             status = 3 + min(conf, 6)
         time_str = format_time(timestamp) if timestamp else _("unknown")