diff --git a/src/calibre/gui2/pyqt6_compat.py b/src/calibre/gui2/pyqt6_compat.py
index b884737d97..f43f3c4066 100644
--- a/src/calibre/gui2/pyqt6_compat.py
+++ b/src/calibre/gui2/pyqt6_compat.py
@@ -10,7 +10,7 @@ from qt.core import (
     QAbstractItemView, QAction, QComboBox, QDialog, QDialogButtonBox, QDrag,
     QEventLoop, QFontMetrics, QFormLayout, QFrame, QImage, QIODevice, QLineEdit,
     QMenu, QMessageBox, QModelIndex, QPalette, QSinglePointEvent, Qt, QThread,
-    QToolButton
+    QToolButton, QEvent
 )
 
 from calibre_extensions import progress_indicator
@@ -60,7 +60,7 @@ QFontMetrics.width = lambda self, text: self.horizontalAdvance(text)
 # Restore enum values to various classes
 for cls in (
     Qt, QDialog, QToolButton, QAbstractItemView, QDialogButtonBox, QFrame, QComboBox,
-    QLineEdit, QAction, QImage, QIODevice, QPalette, QFormLayout
+    QLineEdit, QAction, QImage, QIODevice, QPalette, QFormLayout, QEvent
 ):
     for var in tuple(vars(cls).values()):
         m = getattr(var, '__members__', {})