diff --git a/src/calibre/gui2/tweak_book/undo.py b/src/calibre/gui2/tweak_book/undo.py
index 5a81aa0e57..f568b30850 100644
--- a/src/calibre/gui2/tweak_book/undo.py
+++ b/src/calibre/gui2/tweak_book/undo.py
@@ -108,6 +108,7 @@ class GlobalUndoHistory(QAbstractListModel):
             self.beginRemoveRows(ROOT, 0, num - 1)
             cleanup(self.states[:num])
             self.states = self.states[num:]
+            self.pos -= num
             self.endRemoveRows()
 
     def rewind_savepoint(self):