diff --git a/segafs/makesegafs.py b/segafs/makesegafs.py
index fd9785f..1e1733f 100644
--- a/segafs/makesegafs.py
+++ b/segafs/makesegafs.py
@@ -148,7 +148,7 @@ iv = secrets.token_bytes(16)
 encrypted_keypair = PKCS1_OAEP.new(HEADER_META_PUBKEY).encrypt(key + iv)
 header_meta = struct.pack("<Q", int(time.time())) + os.path.abspath(INPUT_FILE).encode(
     "utf-8"
-)
+) + b"\x00"
 header_meta += secrets.token_bytes(
     BOOTID["block_size"] - len(header_meta) - len(encrypted_keypair)
 )