Timeout is specified in TimeSpan, but doesn't tolerate all input in domain

[haf]

public static bool SendRequestWaitForResponse<TRequest>(this UntypedChannel channel, TimeSpan timeout) 
in class ExtensionsForChannels

If I pass TimeSpan.MaxValue to this method, I get the exception:

System.ArgumentOutOfRangeException was unhandled by user code
  Message=Number must be either non-negative and less than or equal to Int32.MaxValue or -1.
Parameter name: timeout
  Source=mscorlib
  ParamName=timeout
  StackTrace:
       at System.Threading.WaitHandle.WaitOne(TimeSpan timeout, Boolean exitContext)
       at Stact.ExtensionsForChannels.SendRequestWaitForResponse[TRequest](UntypedChannel channel, TimeSpan timeout) in d:\BuildAgent-02\work\115708377bf4f2b8\src\Stact\Channels\ExtensionsForChannels.cs:line 92
       at ReceiverSpike.contexts.finicky_consumer_context.with_filter(Action`1 action) in D:\code\throw-away\ReceiverSpike\ReceiverSpike\contexts\finicky_consumer_context.cs:line 59
       at ReceiverSpike.when_inserting_multiple_events_they_are_filtered_spec.<.ctor>b__0() in D:\code\throw-away\ReceiverSpike\ReceiverSpike\filter_specifications.cs:line 62
       at Machine.Specifications.Utility.RandomExtensionMethods.<InvokeAll>b__3(Action x)
       at Machine.Specifications.Utility.RandomExtensionMethods.Each[T](IEnumerable`1 enumerable, Action`1 action)
       at Machine.Specifications.Utility.RandomExtensionMethods.InvokeAll(IEnumerable`1 actions)
       at Machine.Specifications.Utility.RandomExtensionMethods.InvokeAll(IEnumerable`1 becauseActions)
       at Machine.Specifications.Model.Context.EstablishContext()
  InnerException: 

And yet I am passing a value that is completely valid according to the API...

How can I be sure to wait indefinitely for an actor without doing something like this?