1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/src/pkix/PkixCertPathValidatorException.cs b/crypto/src/pkix/PkixCertPathValidatorException.cs

index 35522c6f8..a477f7dc4 100644
--- a/crypto/src/pkix/PkixCertPathValidatorException.cs
+++ b/crypto/src/pkix/PkixCertPathValidatorException.cs
@@ -27,7 +27,7 @@ namespace Org.BouncyCastle.Pkix
 	 *
 	 * @see CertPathValidator
 	 **/
-#if !(NETCF_1_0 || NETCF_2_0 || SILVERLIGHT)
+#if !(NETCF_1_0 || NETCF_2_0 || SILVERLIGHT || PORTABLE)
     [Serializable]
 #endif
     public class PkixCertPathValidatorException