diff --git a/lib/epub/cfi.rb b/lib/epub/cfi.rb
index <HASH>..<HASH> 100644
--- a/lib/epub/cfi.rb
+++ b/lib/epub/cfi.rb
@@ -14,6 +14,8 @@ module EPUB
     end
 
     class Location
+      include Comparable
+
       attr_reader :paths
 
       def initialize(paths=[])
Make EPUB::CFI comparable