diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/SuppressGCTransitionAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/SuppressGCTransitionAttribute.cs
index 5e47e6747d1a..218eac424b0d 100644
--- a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/SuppressGCTransitionAttribute.cs
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/SuppressGCTransitionAttribute.cs
@@ -11,7 +11,7 @@ namespace System.Runtime.InteropServices
     /// The eventual public attribute should replace this one: https://github.com/dotnet/corefx/issues/40740
     /// </remarks>
     [AttributeUsage(AttributeTargets.Method, Inherited = false)]
-    internal sealed class SuppressGCTransitionAttribute : Attribute
+    public sealed class SuppressGCTransitionAttribute : Attribute
     {
         public SuppressGCTransitionAttribute()
         {