diff --git a/Reconnect/Model/TransfersModel.swift b/Reconnect/Model/TransfersModel.swift
index 3142b75..5ab783c 100644
--- a/Reconnect/Model/TransfersModel.swift
+++ b/Reconnect/Model/TransfersModel.swift
@@ -66,7 +66,7 @@ class TransfersModel {
             // reasonable point to hook an initial implementation.
             var urls: [URL] = [downloadURL]
             if convertFiles {
-                if directoryEntry.fileType == .mbm {
+                if directoryEntry.fileType == .mbm || directoryEntry.pathExtension.lowercased() == "mbm" {
                     urls = try PsiLuaEnv().convertMultiBitmap(at: downloadURL, removeSource: true)
                 }
             }
diff --git a/ReconnectCore/Sources/ReconnectCore/Extensions/DirectoryEntry.swift b/ReconnectCore/Sources/ReconnectCore/Extensions/DirectoryEntry.swift
index 73e9e5f..788d88a 100644
--- a/ReconnectCore/Sources/ReconnectCore/Extensions/DirectoryEntry.swift
+++ b/ReconnectCore/Sources/ReconnectCore/Extensions/DirectoryEntry.swift
@@ -48,5 +48,9 @@ extension FileServer.DirectoryEntry {
             }
         }
     }
+    
+    public var pathExtension: String {
+        return (self.name as NSString).pathExtension
+    }
 
 }