diff --git a/crypto/x509/x509spki.c b/crypto/x509/x509spki.c
index 77fa8b857e1..7cc38ea1991 100644
--- a/crypto/x509/x509spki.c
+++ b/crypto/x509/x509spki.c
@@ -134,8 +134,9 @@ char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki) {
 }
 
 int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki) {
-  if (out == NULL || spki == NULL || spki->spkac->pubkey == NULL ||
-      spki->sig_algor == NULL || spki->signature == NULL) {
+  if (out == NULL || spki == NULL || spki->spkac == NULL ||
+      spki->spkac->pubkey == NULL || spki->sig_algor == NULL ||
+      spki->sig_algor->algorithm == NULL || spki->signature == NULL) {
     OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
     return 0;
   }