diff --git a/lib/libarchive/archive_read_support_format_iso9660.c b/lib/libarchive/archive_read_support_format_iso9660.c
index eabdd8b3fbc..0ab5cae7067 100644
--- a/lib/libarchive/archive_read_support_format_iso9660.c
+++ b/lib/libarchive/archive_read_support_format_iso9660.c
@@ -579,6 +579,7 @@ archive_read_format_iso9660_read_header(struct archive_read *a,
 	    && file->size > 0) {
 		archive_entry_set_hardlink(entry,
 		    iso9660->previous_pathname.s);
+		archive_entry_unset_size(entry);
 		iso9660->entry_bytes_remaining = 0;
 		iso9660->entry_sparse_offset = 0;
 		release_file(iso9660, file);