1 files changed, 3 insertions, 1 deletions
diff --git a/src/mscorlib/src/System/Threading/AbandonedMutexException.cs b/src/mscorlib/src/System/Threading/AbandonedMutexException.cs
index c6dd96bf2c..b581e561cc 100644
--- a/src/mscorlib/src/System/Threading/AbandonedMutexException.cs
+++ b/src/mscorlib/src/System/Threading/AbandonedMutexException.cs
@@ -15,8 +15,10 @@ namespace System.Threading {
     using System.Runtime.Serialization;
     using System.Threading;
     using System.Runtime.InteropServices;
-    
+
+#if FEATURE_SERIALIZATION
     [Serializable]
+#endif
     [ComVisibleAttribute(false)]
     public class AbandonedMutexException : SystemException {