diff --git a/src/Microsoft.AspNet.Mvc.Core/Rendering/Html/HtmlHelper.cs b/src/Microsoft.AspNet.Mvc.Core/Rendering/Html/HtmlHelper.cs
index 8a04566836..d0ff591f80 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Rendering/Html/HtmlHelper.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Rendering/Html/HtmlHelper.cs
@@ -588,6 +588,7 @@ namespace Microsoft.AspNet.Mvc.Rendering
                 }
             }
 
+            // Special-case opaque values and arbitrary binary data.
             var byteArrayValue = value as byte[];
             if (byteArrayValue != null)
             {