diff --git a/crypto/x509/x_crl.c b/crypto/x509/x_crl.c
index 2d74ff52..2f77fd73 100644
--- a/crypto/x509/x_crl.c
+++ b/crypto/x509/x_crl.c
@@ -275,6 +275,7 @@ static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 				{
 				/* We handle IDP and deltas */
 				if ((nid == NID_issuing_distribution_point)
+					|| (nid == NID_authority_key_identifier)
 					|| (nid == NID_delta_crl))
 					break;;
 				crl->flags |= EXFLAG_CRITICAL;