diff --git a/src/Microsoft.AspNet.Routing/Constraints/DateTimeRouteConstraint.cs b/src/Microsoft.AspNet.Routing/Constraints/DateTimeRouteConstraint.cs
index 93b6130dc5..f8c5e656f0 100644
--- a/src/Microsoft.AspNet.Routing/Constraints/DateTimeRouteConstraint.cs
+++ b/src/Microsoft.AspNet.Routing/Constraints/DateTimeRouteConstraint.cs
@@ -10,8 +10,13 @@ namespace Microsoft.AspNet.Routing.Constraints
{
///
/// Constrains a route parameter to represent only values.
- /// Supports date time formats represented by CultureInfo.DateTimeFormat for the CultureInfo.InvariantCulture.
///
+ ///
+ /// This constraint tries to parse strings by using all of the formats returned by the
+ /// CultureInfo.InvariantCulture.DateTimeFormat.GetAllDateTimePatterns() method.
+ /// For a sample on how to list all formats which are considered, please visit
+ /// http://msdn.microsoft.com/en-us/library/aszyst2c(v=vs.110).aspx
+ ///
public class DateTimeRouteConstraint : IRouteConstraint
{
///