diff --git a/esl_reader.py b/esl_reader.py
index e429efa..b614de9 100755
--- a/esl_reader.py
+++ b/esl_reader.py
@@ -9,7 +9,7 @@
 import os
 import re
 import sys
-from typing import Optional
+from typing import Optional, cast
 
 from PyQt6.QtCore import (
     QCoreApplication,
@@ -105,7 +105,8 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     def addPerson(self) -> None:
         dlg = PersonDialog()
         dlg.exec()
-        model = self.peopleView.model()
+        model = cast(QSqlQueryModel,self.peopleView.model())
+        assert model is not None
         model.setQuery(model.query())
         return