diff --git a/src/calibre/gui2/dbus_export/demo.py b/src/calibre/gui2/dbus_export/demo.py
index f6a26ce44b..d656935794 100644
--- a/src/calibre/gui2/dbus_export/demo.py
+++ b/src/calibre/gui2/dbus_export/demo.py
@@ -8,7 +8,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 import time
 
 from PyQt5.Qt import (
-    QApplication, QMainWindow, QVBoxLayout, Qt, QKeySequence, QAction, QEvent,
+    QApplication, QMainWindow, QVBoxLayout, Qt, QKeySequence, QAction, QEvent, QStyle,
     QActionGroup, QMenu, QPushButton, QWidget, QTimer, QMessageBox, pyqtSignal)
 
 from calibre.gui2.dbus_export.utils import setup_for_cli_run
diff --git a/src/calibre/gui2/store/search/search.py b/src/calibre/gui2/store/search/search.py
index aba51b01af..44711c978e 100644
--- a/src/calibre/gui2/store/search/search.py
+++ b/src/calibre/gui2/store/search/search.py
@@ -9,7 +9,7 @@ import re
 from random import shuffle
 
 from PyQt5.Qt import (Qt, QDialog, QDialogButtonBox, QTimer, QCheckBox, QLabel,
-                      QVBoxLayout, QIcon, QWidget, QTabWidget, QGridLayout, QApplication)
+                      QVBoxLayout, QIcon, QWidget, QTabWidget, QGridLayout, QApplication, QStyle)
 
 from calibre.gui2 import JSONConfig, info_dialog, error_dialog
 from calibre.gui2.dialogs.choose_format import ChooseFormatDialog
diff --git a/src/calibre/gui2/tag_browser/view.py b/src/calibre/gui2/tag_browser/view.py
index 26d84dcfbf..4b29933d81 100644
--- a/src/calibre/gui2/tag_browser/view.py
+++ b/src/calibre/gui2/tag_browser/view.py
@@ -53,7 +53,7 @@ class TagDelegate(QStyledItemDelegate):  # {{{
         if self.old_look:
             bg = option.palette.alternateBase() if option.features&option.Alternate else option.palette.base()
         painter.fillRect(r, bg)
-        style.proxy().drawPrimitive(style.PE_PanelItemViewItem, option, painter, widget)
+        style.proxy().drawPrimitive(QStyle.PrimitiveElement.PE_PanelItemViewItem, option, painter, widget)
         painter.setOpacity(0.3)
         icon.paint(painter, r, option.decorationAlignment, QIcon.Mode.Normal, QIcon.State.On)
         painter.restore()
diff --git a/src/calibre/gui2/viewer/highlights.py b/src/calibre/gui2/viewer/highlights.py
index 1e9bdd8bde..9d9cab196f 100644
--- a/src/calibre/gui2/viewer/highlights.py
+++ b/src/calibre/gui2/viewer/highlights.py
@@ -11,7 +11,7 @@ from PyQt5.Qt import (
     QColor, QFont, QHBoxLayout, QIcon, QImage, QItemSelectionModel, QKeySequence,
     QLabel, QMenu, QPainter, QPainterPath, QPixmap, QPushButton, QRect, QSizePolicy,
     Qt, QTextEdit, QTreeWidget, QTreeWidgetItem, QVBoxLayout, QWidget, pyqtSignal,
-    QAbstractItemView, QDialog, QPalette
+    QAbstractItemView, QDialog, QPalette, QStyle
 )
 
 from calibre.constants import (