diff --git a/UnionPatcher.Gui.Windows/Program.cs b/UnionPatcher.Gui.Windows/Program.cs
index e2142f9..44bf0f1 100644
--- a/UnionPatcher.Gui.Windows/Program.cs
+++ b/UnionPatcher.Gui.Windows/Program.cs
@@ -1,5 +1,8 @@
-namespace UnionPatcher.Gui.Windows {
+using System;
+
+namespace UnionPatcher.Gui.Windows {
     public static class Program {
+        [STAThread]
         public static void Main() {
             Gui.Show();
         }