diff --git a/qt/aqt/preferences.py b/qt/aqt/preferences.py
index a52a88372..89e4ac8e0 100644
--- a/qt/aqt/preferences.py
+++ b/qt/aqt/preferences.py
@@ -230,7 +230,9 @@ class Preferences(QDialog):
         self.update_login_status()
 
     def confirm_sync_after_login(self) -> None:
-        if askUser(tr.preferences_login_successful_sync_now()):
+        from aqt import mw
+
+        if askUser(tr.preferences_login_successful_sync_now(), parent=mw):
             self.accept_with_callback(self.mw.on_sync_button_clicked)
 
     def update_network(self) -> None:
diff --git a/qt/aqt/sync.py b/qt/aqt/sync.py
index cd0a976c2..21386f067 100644
--- a/qt/aqt/sync.py
+++ b/qt/aqt/sync.py
@@ -318,6 +318,7 @@ def sync_login(
             username=username, password=password, endpoint=mw.pm.sync_endpoint()
         ),
         on_future_done,
+        parent=mw,
     )