diff --git a/lib/jekyll/collection.rb b/lib/jekyll/collection.rb
index 95e4c8a1..21351374 100644
--- a/lib/jekyll/collection.rb
+++ b/lib/jekyll/collection.rb
@@ -19,7 +19,7 @@ module Jekyll
           docs << doc
         end
       end
-      docs
+      docs.sort!
     end
 
     def directory
diff --git a/lib/jekyll/document.rb b/lib/jekyll/document.rb
index e637fbd1..23ee437e 100644
--- a/lib/jekyll/document.rb
+++ b/lib/jekyll/document.rb
@@ -1,5 +1,6 @@
 module Jekyll
   class Document
+    include Comparable
 
     attr_reader   :path, :site
     attr_accessor :content, :collection
@@ -88,5 +89,9 @@ module Jekyll
       })
     end
 
+    def <=>(anotherDocument)
+      path <=> anotherDocument.path
+    end
+
   end
 end