diff --git a/ArcFormats/Zyx/ArcBDF.cs b/ArcFormats/Zyx/ArcBDF.cs
index 8fe77757..ab09cd0f 100644
--- a/ArcFormats/Zyx/ArcBDF.cs
+++ b/ArcFormats/Zyx/ArcBDF.cs
@@ -211,10 +211,13 @@ namespace GameRes.Formats.Zyx
                     Width = file.View.ReadInt32 (index_offset+0x14),
                     Height = file.View.ReadInt32 (index_offset+0x18),
                 };
-                if (entry.Size < 4 || entry.Width <= 0 || entry.Height <= 0
-                    || !entry.CheckPlacement (file.MaxOffset))
-                    return null;
-                dir.Add (entry);
+                if (entry.Size > 0)
+                {
+                    if (entry.Size < 4 || entry.Width <= 0 || entry.Height <= 0
+                        || !entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                }
                 index_offset += 0x1C;
             }
             return new BdfArchive (file, this, dir);