diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index 8c062602dc..196e4ec1a1 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -772,7 +772,7 @@ namespace BizHawk.MultiClient
 
 		private bool IsValidMovieExtension(string ext)
 		{
-			return (ext.ToUpper() == ".TAS");
+			return (ext.ToUpper() == "." + Global.Config.MovieExtension);
 		}
 
 		private void FormDragDrop(object sender, DragEventArgs e)