diff --git a/library/x509_crt.c b/library/x509_crt.c
index 9372998..f1f5473 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1606,8 +1606,8 @@
     ret = mbedtls_snprintf( p, n, "\n%ssigned using      : ", prefix );
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
-                             crt->sig_md, crt->sig_opts );
+    ret = mbedtls_x509_sig_alg_gets( p, n, sig_info.sig_pk,
+                                     sig_info.sig_md, sig_info.sig_opts );
     MBEDTLS_X509_SAFE_SNPRINTF;
 
     /* Key size */