diff --git a/src/Components/Components/src/Rendering/ParameterViewLifetime.cs b/src/Components/Components/src/Rendering/ParameterViewLifetime.cs
index 7fe5a244a9..aefcb89180 100644
--- a/src/Components/Components/src/Rendering/ParameterViewLifetime.cs
+++ b/src/Components/Components/src/Rendering/ParameterViewLifetime.cs
@@ -20,7 +20,8 @@ namespace Microsoft.AspNetCore.Components.Rendering
 
         public void AssertNotExpired()
         {
-            // _owner will be null if this instance is default(ParameterViewLifetime)
+            // If _owner is null, this instance is default(ParameterViewLifetime), which is
+            // the same as ParameterViewLifetime.Unbound. That means it never expires.
             if (_owner != null && _owner.ParameterViewValidityStamp != _stamp)
             {
                 throw new InvalidOperationException($"The {nameof(ParameterView)} instance can no longer be read because it has expired. {nameof(ParameterView)} can only be read synchronously and must not be stored for later use.");