diff --git a/ArcFormats/Malie/ImageDZI.cs b/ArcFormats/Malie/ImageDZI.cs
index d1df1536..83eea814 100644
--- a/ArcFormats/Malie/ImageDZI.cs
+++ b/ArcFormats/Malie/ImageDZI.cs
@@ -59,6 +59,8 @@ namespace GameRes.Formats.Malie
         public override ImageMetaData ReadMetaData (Stream stream)
         {
             var tex = VFS.FindFile ("tex");
+            if (!(tex is SubDirEntry))
+                return null;
             using (var reader = new StreamReader (stream, Encoding.UTF8, false, 2048, true))
             {
                 reader.ReadLine(); // skip signature