diff --git a/bin/MakeHFS b/bin/MakeHFS
index e5ebb1a..a26ac5a 100755
--- a/bin/MakeHFS
+++ b/bin/MakeHFS
@@ -164,6 +164,7 @@ else: # is raw filesystem
     offset = 0
     size = hack_file_size(f)
     trunc = False
+    nameoffset = None
 
 left, gap, right = vol.write(size, startapp=args.app, sparse=True)