diff --git a/ldap/compositetypes/composite_types.go b/ldap/compositetypes/composite_types.go
index 51437c9fafee0386f557854ede35df28468eab0e..326441aaa9eeb825d6d8239ce2224990c2031b86 100644
--- a/ldap/compositetypes/composite_types.go
+++ b/ldap/compositetypes/composite_types.go
@@ -115,6 +115,7 @@ func UnmarshalEncryptedKey(s string) (*EncryptedKey, error) {
 type U2FRegistration struct {
 	KeyHandle []byte `json:"key_handle"`
 	PublicKey []byte `json:"public_key"`
+	Comment   string `json:"comment"`
 	Legacy    bool   `json:"-"`
 }