diff --git a/lib/jekyll/cleaner.rb b/lib/jekyll/cleaner.rb
index a8b269f4..4c93411d 100644
--- a/lib/jekyll/cleaner.rb
+++ b/lib/jekyll/cleaner.rb
@@ -36,7 +36,7 @@ module Jekyll
     # Returns a Set with the file paths
     def existing_files
       files = Set.new
-      Dir.glob(site.in_dest_dir("**", "*"), File::FNM_DOTMATCH) do |file|
+      Dir.glob(site.reader.in_dest_dir("**", "*"), File::FNM_DOTMATCH) do |file|
         files << file unless file =~ /\/\.{1,2}$/ || file =~ keep_file_regex || keep_dirs.include?(file)
       end
       files
@@ -83,7 +83,7 @@ module Jekyll
     #
     # Returns a Set with the directory paths
     def keep_dirs
-      site.keep_files.map { |file| parent_dirs(site.in_dest_dir(file)) }.flatten.to_set
+      site.keep_files.map { |file| parent_dirs(site.reader.in_dest_dir(file)) }.flatten.to_set
     end
 
     # Private: Creates a regular expression from the config's keep_files array
diff --git a/lib/jekyll/document.rb b/lib/jekyll/document.rb
index cd407dfa..5419647c 100644
--- a/lib/jekyll/document.rb
+++ b/lib/jekyll/document.rb
@@ -162,8 +162,8 @@ module Jekyll
     #
     # Returns the full path to the output file of this document.
     def destination(base_directory)
-      dest = site.in_dest_dir(base_directory)
-      path = site.in_dest_dir(dest, URL.unescape_path(url))
+      dest = site.reader.in_dest_dir(base_directory)
+      path = site.reader.in_dest_dir(dest, URL.unescape_path(url))
       path = File.join(path, "index.html") if url.end_with?("/")
       path << output_ext unless path.end_with?(output_ext)
       path
diff --git a/lib/jekyll/page.rb b/lib/jekyll/page.rb
index ca824245..75ca190c 100644
--- a/lib/jekyll/page.rb
+++ b/lib/jekyll/page.rb
@@ -140,7 +140,7 @@ module Jekyll
     #
     # Returns the destination file path String.
     def destination(dest)
-      path = site.in_dest_dir(dest, URL.unescape_path(url))
+      path = site.reader.in_dest_dir(dest, URL.unescape_path(url))
       path = File.join(path, "index.html") if url.end_with?("/")
       path << output_ext unless path.end_with?(output_ext)
       path
diff --git a/lib/jekyll/post.rb b/lib/jekyll/post.rb
index 5d48d180..c80a35e4 100644
--- a/lib/jekyll/post.rb
+++ b/lib/jekyll/post.rb
@@ -278,7 +278,7 @@ module Jekyll
     # Returns destination file path String.
     def destination(dest)
       # The url needs to be unescaped in order to preserve the correct filename
-      path = site.in_dest_dir(dest, URL.unescape_path(url))
+      path = site.reader.in_dest_dir(dest, URL.unescape_path(url))
       path = File.join(path, "index.html") if self.url.end_with?("/")
       path << output_ext unless path.end_with?(output_ext)
       path
diff --git a/lib/jekyll/site.rb b/lib/jekyll/site.rb
index d8a1d7bf..9b71db3b 100644
--- a/lib/jekyll/site.rb
+++ b/lib/jekyll/site.rb
@@ -99,16 +99,6 @@ module Jekyll
       end
     end
 
-    # Public: Prefix a given path with the destination directory.
-    #
-    # paths - (optional) path elements to a file or directory within the
-    #         destination directory
-    #
-    # Returns a path which is prefixed with the destination directory.
-    def in_dest_dir(*paths)
-      reader.in_dest_dir(*paths)
-    end
-
     # The list of collections and their corresponding Jekyll::Collection instances.
     # If config['collections'] is set, a new instance is created for each item in the collection.
     # If config['collections'] is not set, a new hash is returned.
diff --git a/lib/jekyll/static_file.rb b/lib/jekyll/static_file.rb
index b83f4fae..cb1b3079 100644
--- a/lib/jekyll/static_file.rb
+++ b/lib/jekyll/static_file.rb
@@ -35,7 +35,7 @@ module Jekyll
     #
     # Returns destination file path.
     def destination(dest)
-      @site.in_dest_dir(*[dest, destination_rel_dir, @name].compact)
+      @site.reader.in_dest_dir(*[dest, destination_rel_dir, @name].compact)
     end
 
     def destination_rel_dir