diff --git a/src/07 Qt Text Editor/main.py b/src/07 Qt Text Editor/main.py
index 06caccf..e5be646 100644
--- a/src/07 Qt Text Editor/main.py	
+++ b/src/07 Qt Text Editor/main.py	
@@ -12,6 +12,8 @@ class MainWindow(QMainWindow):
         )
         if answer & QMessageBox.Save:
             save()
+            if text.document().isModified():
+                event.ignore()
         elif answer & QMessageBox.Cancel:
             e.ignore()
 
@@ -76,4 +78,4 @@ def show_about_dialog():
 about_action.triggered.connect(show_about_dialog)
 
 window.show()
-app.exec_()
\ No newline at end of file
+app.exec_()