diff --git a/DiscImageChef.Filesystems/LisaFS/Dir.cs b/DiscImageChef.Filesystems/LisaFS/Dir.cs
index cdd616241..a8735a96e 100644
--- a/DiscImageChef.Filesystems/LisaFS/Dir.cs
+++ b/DiscImageChef.Filesystems/LisaFS/Dir.cs
@@ -157,12 +157,17 @@ namespace DiscImageChef.Filesystems.LisaFS
                     entry.wasted = BigEndianBitConverter.ToInt32(buf, offset + 0x34);
                     entry.tail = new byte[8];
                     Array.Copy(buf, offset + 0x38, entry.tail, 0, 8);
-                    catalog.Add(entry);
 
-                    if(fileSizeCache.ContainsKey(entry.fileID))
-                        fileSizeCache.Remove(entry.fileID);
-
-                    fileSizeCache.Add(entry.fileID, entry.length);
+                    // This is as Pascal Workshop does, if there is no extents file it simply ignores it.
+                    ExtentFile ext;
+                    if(ReadExtentsFile(entry.fileID, out ext) == Errno.NoError)
+                    {
+                        if(!fileSizeCache.ContainsKey(entry.fileID))
+                        {
+                            catalog.Add(entry);
+                            fileSizeCache.Add(entry.fileID, entry.length);
+                        }
+                    }
 
                     offset += 64;
                 }
diff --git a/DiscImageChef.Filesystems/LisaFS/LisaFS.cs b/DiscImageChef.Filesystems/LisaFS/LisaFS.cs
index 3b607be8f..dc41abefe 100644
--- a/DiscImageChef.Filesystems/LisaFS/LisaFS.cs
+++ b/DiscImageChef.Filesystems/LisaFS/LisaFS.cs
@@ -71,6 +71,8 @@ namespace DiscImageChef.Filesystems.LisaFS
         public LisaFS(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
         {
             device = imagePlugin;
+            Name = "Apple Lisa File System";
+            PluginUUID = new Guid("7E6034D1-D823-4248-A54D-239742B28391");
         }
     }
 }