diff --git a/contrib/libarchive/libarchive/archive_read_support_format_iso9660.c b/contrib/libarchive/libarchive/archive_read_support_format_iso9660.c
index fb6120363bec..516b844fa45a 100644
--- a/contrib/libarchive/libarchive/archive_read_support_format_iso9660.c
+++ b/contrib/libarchive/libarchive/archive_read_support_format_iso9660.c
@@ -895,8 +895,10 @@ isPVD(struct iso9660 *iso9660, const unsigned char *h)
 		return (0);
 
 	/* Reserved field must be 0. */
+	/* FreeBSD: makefs erroneously created images with 0x20 */
 	for (i = 0; i < PVD_reserved4_size; ++i)
-		if (h[PVD_reserved4_offset + i] != 0)
+		if (h[PVD_reserved4_offset + i] != 0 &&
+		    h[PVD_reserved4_offset + i] != 32)
 			return (0);
 
 	/* Reserved field must be 0. */