diff --git a/block-vvfat.c b/block-vvfat.c
index 2dd1f2488c64aa7bfbc413785f6e7de5b7c408e1..08d426bbd565406d9e73f18bb279a2ecd525b6a9 100644
--- a/block-vvfat.c
+++ b/block-vvfat.c
@@ -1440,6 +1440,7 @@ static int parse_long_name(long_file_name* lfn,
 	lfn->sequence_number = pointer[0] & 0x3f;
 	lfn->checksum = pointer[13];
 	lfn->name[0] = 0;
+	lfn->name[lfn->sequence_number * 13] = 0;
     } else if ((pointer[0] & 0x3f) != --lfn->sequence_number)
 	return -1;
     else if (pointer[13] != lfn->checksum)