diff --git a/AssetStudio.GUI/MainForm.cs b/AssetStudio.GUI/MainForm.cs
index df775c2..d0d3dd9 100644
--- a/AssetStudio.GUI/MainForm.cs
+++ b/AssetStudio.GUI/MainForm.cs
@@ -185,7 +185,7 @@ namespace AssetStudio.GUI
         {
             if (e.Data.GetDataPresent(DataFormats.FileDrop))
             {
-                e.Effect = DragDropEffects.Move;
+                e.Effect = DragDropEffects.Copy;
             }
         }