1 files changed, 1 insertions, 3 deletions
diff --git a/src/mscorlib/src/System/Threading/Tasks/AsyncCausalityTracer.cs b/src/mscorlib/src/System/Threading/Tasks/AsyncCausalityTracer.cs
index c29b11a922..ec7c5aaeea 100644
--- a/src/mscorlib/src/System/Threading/Tasks/AsyncCausalityTracer.cs
+++ b/src/mscorlib/src/System/Threading/Tasks/AsyncCausalityTracer.cs
@@ -131,7 +131,6 @@ namespace System.Threading.Tasks
         private static Loggers f_LoggingOn; //assumes false by default
 
         // The precise static constructor will run first time somebody attempts to access this class
-        [SecuritySafeCritical]
         static AsyncCausalityTracer()
         {
             if (!Environment.IsWinRTSupported) return;
@@ -153,7 +152,7 @@ namespace System.Threading.Tasks
                 s_TracerFactory = (WFD.IAsyncCausalityTracerStatics)factory;
 
                 EventRegistrationToken token = s_TracerFactory.add_TracingStatusChanged(new EventHandler<WFD.TracingStatusChangedEventArgs>(TracingStatusChangedHandler));
-                Contract.Assert(token != default(EventRegistrationToken), "EventRegistrationToken is null");
+                Debug.Assert(token != default(EventRegistrationToken), "EventRegistrationToken is null");
             }
             catch (Exception ex)
             {
@@ -165,7 +164,6 @@ namespace System.Threading.Tasks
            
         }
 
-        [SecuritySafeCritical]
         private static void TracingStatusChangedHandler(Object sender, WFD.TracingStatusChangedEventArgs args)
         {
             if (args.Enabled)