diff --git a/mangadownloader/forms/frmMain.pas b/mangadownloader/forms/frmMain.pas
index 31c7ecb9f..b0f441a0c 100644
--- a/mangadownloader/forms/frmMain.pas
+++ b/mangadownloader/forms/frmMain.pas
@@ -1330,6 +1330,7 @@ procedure TMainForm.itStartupTimer(Sender: TObject);
   itStartup.Enabled := False;
   if not isStartup then
   begin
+    isStartup := True;
     if cbSelectManga.ItemIndex > -1 then
       OpenDataDB(cbSelectManga.Items[cbSelectManga.ItemIndex]);
     if cbOptionAutoCheckUpdate.Checked then