1 files changed, 2 insertions, 2 deletions
diff --git a/mcs/class/referencesource/System.Data.Linq/IdentityManager.cs b/mcs/class/referencesource/System.Data.Linq/IdentityManager.cs
index dbc4eae8f3d..414c1934337 100644
--- a/mcs/class/referencesource/System.Data.Linq/IdentityManager.cs
+++ b/mcs/class/referencesource/System.Data.Linq/IdentityManager.cs
@@ -97,8 +97,8 @@ namespace System.Data.Linq {
 
             #region Nested type definitions
             // These types are internal rather than private to work around
-            // CLR 
-
+            // CLR bug #117419 related to type visibility under partial trust
+            // in nested class scenarios.
 
             internal abstract class KeyManager {
                 internal abstract Type KeyType { get; }