diff --git a/Stencil/Tokenizer.swift b/Stencil/Tokenizer.swift
index c30e9f8..201671d 100644
--- a/Stencil/Tokenizer.swift
+++ b/Stencil/Tokenizer.swift
@@ -1,3 +1,6 @@
+import Foundation
+
+
 public enum Token : Equatable {
   /// A token representing a piece of text.
   case Text(value:String)