diff --git a/SabreTools.Helper/Objects/Dat/DatFile.cs b/SabreTools.Helper/Objects/Dat/DatFile.cs
index 7871faaf..c9edacb8 100644
--- a/SabreTools.Helper/Objects/Dat/DatFile.cs
+++ b/SabreTools.Helper/Objects/Dat/DatFile.cs
@@ -5237,7 +5237,7 @@ namespace SabreTools.Helper
 					
 					DatFile lastdirdat = new DatFile
 					{
-						FileName = lastdir.Remove(0, basepath.Length + (basepath.Length == 0 ? 0 : 1)),
+						FileName = "DIR: " + HttpUtility.HtmlEncode(lastdir.Remove(0, basepath.Length + (basepath.Length == 0 ? 0 : 1))),
 						TotalSize = dirSize,
 						RomCount = dirRom,
 						DiskCount = dirDisk,
@@ -5313,7 +5313,7 @@ namespace SabreTools.Helper
 			{
 				DatFile dirdat = new DatFile
 				{
-					FileName = lastdir.Remove(0, basepath.Length + (basepath.Length == 0 ? 0 : 1)),
+					FileName = "DIR: " + HttpUtility.HtmlEncode(lastdir.Remove(0, basepath.Length + (basepath.Length == 0 ? 0 : 1))),
 					TotalSize = dirSize,
 					RomCount = dirRom,
 					DiskCount = dirDisk,