--- a/src/java.base/share/classes/sun/security/rsa/RSAPrivateKeyImpl.java	Wed Oct 09 17:38:58 2019 +0100
+++ b/src/java.base/share/classes/sun/security/rsa/RSAPrivateKeyImpl.java	Wed Oct 09 09:57:41 2019 -0700
@@ -61,6 +61,7 @@
     // optional parameters associated with this RSA key
     // specified in the encoding of its AlgorithmId.
     // must be null for "RSA" keys.
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private final AlgorithmParameterSpec keyParams;
 
     /**