diff --git a/kdc/kerberos5.c b/kdc/kerberos5.c
index aeb072f53..23d264873 100644
--- a/kdc/kerberos5.c
+++ b/kdc/kerberos5.c
@@ -65,8 +65,8 @@ set_salt_padata (METHOD_DATA *md, Salt *salt)
     if (salt) {
 	realloc_method_data(md);
 	md->val[md->len - 1].padata_type = salt->type;
-	copy_octet_string(&salt->salt,
-			  &md->val[md->len - 1].padata_value);
+	der_copy_octet_string(&salt->salt,
+			      &md->val[md->len - 1].padata_value);
     }
 }