1 files changed, 1 insertions, 1 deletions

diff --git a/src/u2f.c b/src/u2f.c
index 3f2d9aa..82b289f 100644
--- a/src/u2f.c
+++ b/src/u2f.c
@@ -439,7 +439,7 @@ encode_cred_authdata(const char *rp_id, const uint8_t *kh, uint8_t kh_len,
         authdata.sigcount = 0;
 
         memset(&attcred_raw.aaguid, 0, sizeof(attcred_raw.aaguid));
-        attcred_raw.id_len = (uint16_t)(kh_len << 8); /* XXX */
+        attcred_raw.id_len = htobe16(kh_len);
 
         len = authdata_blob.len = sizeof(authdata) + sizeof(attcred_raw) +
             kh_len + pk_blob.len;