diff --git a/library/x509_crt.c b/library/x509_crt.c
index 764c0b6..276ec1a 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -2962,8 +2962,6 @@
 {
     mbedtls_x509_crt *cert_cur = crt;
     mbedtls_x509_crt *cert_prv;
-    mbedtls_x509_sequence *seq_cur;
-    mbedtls_x509_sequence *seq_prv;
 
     while (cert_cur != NULL) {
         mbedtls_pk_free(&cert_cur->pk);
@@ -2978,15 +2976,6 @@
         mbedtls_asn1_sequence_free(cert_cur->subject_alt_names.next);
         mbedtls_asn1_sequence_free(cert_cur->certificate_policies.next);
 
-        seq_cur = cert_cur->authority_key_id.authorityCertIssuer.next;
-        while (seq_cur != NULL) {
-            seq_prv = seq_cur;
-            seq_cur = seq_cur->next;
-            mbedtls_platform_zeroize(seq_prv,
-                                     sizeof(mbedtls_x509_sequence));
-            mbedtls_free(seq_prv);
-        }
-
         if (cert_cur->raw.p != NULL && cert_cur->own_buffer) {
             mbedtls_platform_zeroize(cert_cur->raw.p, cert_cur->raw.len);
             mbedtls_free(cert_cur->raw.p);