1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/tsp/TSPValidationException.cs b/crypto/src/tsp/TSPValidationException.cs
index 8ef2ec6cf..80f64203b 100644
--- a/crypto/src/tsp/TSPValidationException.cs
+++ b/crypto/src/tsp/TSPValidationException.cs
@@ -8,7 +8,7 @@ namespace Org.BouncyCastle.Tsp
 	 * If a failure code is associated with the exception it can be retrieved using
 	 * the getFailureCode() method.</p>
 	 */
-#if !(NETCF_1_0 || NETCF_2_0 || SILVERLIGHT)
+#if !(NETCF_1_0 || NETCF_2_0 || SILVERLIGHT || PORTABLE)
     [Serializable]
 #endif
     public class TspValidationException