diff --git a/src/libraries/System.Private.CoreLib/src/System/Threading/CancellationTokenSource.cs b/src/libraries/System.Private.CoreLib/src/System/Threading/CancellationTokenSource.cs
index 26c2eb7078598..7ea36b67c970b 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Threading/CancellationTokenSource.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Threading/CancellationTokenSource.cs
@@ -22,6 +22,7 @@ namespace System.Threading
     /// concurrently from multiple threads.
     /// </para>
     /// </remarks>
+    [DebuggerDisplay("IsCancellationRequested = {IsCancellationRequested}")]
     public class CancellationTokenSource : IDisposable
     {
         /// <summary>A <see cref="CancellationTokenSource"/> that's already canceled.</summary>