diff --git a/Flow.Launcher.Core/ProgressBoxEx.xaml.cs b/Flow.Launcher.Core/ProgressBoxEx.xaml.cs
index 00f4a8050..dc1f27404 100644
--- a/Flow.Launcher.Core/ProgressBoxEx.xaml.cs
+++ b/Flow.Launcher.Core/ProgressBoxEx.xaml.cs
@@ -70,6 +70,7 @@ namespace Flow.Launcher.Core
             if (!Application.Current.Dispatcher.CheckAccess())
             {
                 await Application.Current.Dispatcher.InvokeAsync(Close);
+                return;
             }
 
             Close();