diff --git a/index.py b/index.py
index de517b3..091196f 100644
--- a/index.py
+++ b/index.py
@@ -3,7 +3,7 @@ import sys
 import traceback
 
 from arcaea_offline.database import Database
-from PySide6.QtCore import QLibraryInfo, QLocale, QTranslator
+from PySide6.QtCore import QCoreApplication, QLibraryInfo, QLocale, QTranslator
 from PySide6.QtGui import QIcon
 from PySide6.QtWidgets import QApplication, QDialog, QMessageBox
 
@@ -15,6 +15,8 @@ from ui.startup.databaseChecker import DatabaseChecker
 logging.basicConfig(level=logging.INFO, stream=sys.stdout, force=True)
 
 if __name__ == "__main__":
+    QCoreApplication.setApplicationName("Arcaea Offline")
+
     locale = QLocale.system()
     translator = QTranslator()
     translator_load_success = translator.load(QLocale.system(), "", "", ":/lang/")
diff --git a/ui/implements/tabs/tabDb/tabDb_Manage.py b/ui/implements/tabs/tabDb/tabDb_Manage.py
index 2043828..986ca47 100644
--- a/ui/implements/tabs/tabDb/tabDb_Manage.py
+++ b/ui/implements/tabs/tabDb/tabDb_Manage.py
@@ -27,7 +27,7 @@ class TabDb_Manage(Ui_TabDb_Manage, QWidget):
 
         try:
             Database().update_arcsong_db(dbFile)
-            QMessageBox.information(self, "OK", "OK")
+            QMessageBox.information(self, None, "OK")
         except Exception as e:
             logging.exception("Sync arcsong.db error")
             QMessageBox.critical(
@@ -47,7 +47,7 @@ class TabDb_Manage(Ui_TabDb_Manage, QWidget):
                 f"Got {len(scores)} items from {dbFile}, writing into database..."
             )
             Database().import_external(scores)
-            QMessageBox.information(self, "OK", "OK")
+            QMessageBox.information(self, None, "OK")
         except Exception as e:
             logging.exception("import st3 error")
             QMessageBox.critical(