diff --git a/src/libstrongswan/plugins/x509/x509_crl.c b/src/libstrongswan/plugins/x509/x509_crl.c
index f3d5c6d73..1b0e1af8a 100644
--- a/src/libstrongswan/plugins/x509/x509_crl.c
+++ b/src/libstrongswan/plugins/x509/x509_crl.c
@@ -619,7 +619,7 @@ static bool generate(private_x509_crl_t *this, certificate_t *cert,
 	this->issuer = cert->get_issuer(cert);
 	this->issuer = this->issuer->clone(this->issuer);
 
-	this->authKeyIdentifier = chunk_clone(x509->get_authKeyIdentifier(x509));
+	this->authKeyIdentifier = chunk_clone(x509->get_subjectKeyIdentifier(x509));
 
 	/* select signature scheme */
 	this->algorithm = hasher_signature_algorithm_to_oid(digest_alg,