diff --git a/middleman-core/features/support/env.rb b/middleman-core/features/support/env.rb
index 4c122ea1..29799086 100644
--- a/middleman-core/features/support/env.rb
+++ b/middleman-core/features/support/env.rb
@@ -1,5 +1,4 @@
 ENV["TEST"] = "true"
-ENV["AUTOLOAD_SPROCKETS"] ||= "false"
 
 require 'sassc'
 
diff --git a/middleman-core/lib/middleman-core/application.rb b/middleman-core/lib/middleman-core/application.rb
index 5b8cbe9d..ff2d4e4f 100644
--- a/middleman-core/lib/middleman-core/application.rb
+++ b/middleman-core/lib/middleman-core/application.rb
@@ -124,15 +124,15 @@ module Middleman
     # @return [String]
     define_setting :js_dir,      'javascripts', 'Location of javascripts within source'
 
-    # Location of stylesheets within source. Used by Compass.
+    # Location of stylesheets within source.
     # @return [String]
     define_setting :css_dir,     'stylesheets', 'Location of stylesheets within source'
 
-    # Location of images within source. Used by HTML helpers and Compass.
+    # Location of images within source. Used by HTML helpers.
     # @return [String]
     define_setting :images_dir,  'images', 'Location of images within source'
 
-    # Location of fonts within source. Used by Compass.
+    # Location of fonts within source.
     # @return [String]
     define_setting :fonts_dir,   'fonts', 'Location of fonts within source'
 
@@ -144,7 +144,7 @@ module Middleman
     # @return [String]
     define_setting :build_dir,   'build', 'Where to build output files'
 
-    # Default prefix for building paths. Used by HTML helpers and Compass.
+    # Default prefix for building paths. Used by HTML helpers.
     # @return [String]
     define_setting :http_prefix, '/', 'Default prefix for building paths'
 
diff --git a/middleman-core/lib/middleman-core/builder.rb b/middleman-core/lib/middleman-core/builder.rb
index f0a57aa1..c92c6a51 100644
--- a/middleman-core/lib/middleman-core/builder.rb
+++ b/middleman-core/lib/middleman-core/builder.rb
@@ -54,7 +54,6 @@ module Middleman
       @app.execute_callbacks(:before_build, [self])
 
       queue_current_paths if @cleaning
-      prerender_css
 
       output_files
 
@@ -67,39 +66,14 @@ module Middleman
       !@has_error
     end
 
-    # Pre-request CSS to give Compass a chance to build sprites
-    # @return [Array<Resource>] List of css resources that were output.
-    Contract ResourceList
-    def prerender_css
-      logger.debug '== Prerendering CSS'
-
-      css_files = @app.sitemap.resources.select do |resource|
-        resource.ext == '.css'
-      end.each(&method(:output_resource))
-
-      logger.debug '== Checking for Compass sprites'
-
-      # Double-check for compass sprites
-      @app.files.find_new_files!
-      @app.sitemap.ensure_resource_list_updated!
-
-      css_files
-    end
-
     # Find all the files we need to output and do so.
     # @return [Array<Resource>] List of resources that were output.
     Contract ResourceList
     def output_files
       logger.debug '== Building files'
 
-      # Sort paths to be built by the above order. This is primarily so Compass can
-      # find files in the build folder when it needs to generate sprites for the
-      # css files.
-      #
-      # Loop over all the paths and build them.
       @app.sitemap.resources
         .sort_by { |resource| SORT_ORDER.index(resource.ext) || 100 }
-        .reject { |resource| resource.ext == '.css' }
         .select { |resource| !@glob || File.fnmatch(@glob, resource.destination_path) }
         .each(&method(:output_resource))
     end
diff --git a/middleman-core/lib/middleman-core/extension.rb b/middleman-core/lib/middleman-core/extension.rb
index 3747b7d5..a44273a3 100644
--- a/middleman-core/lib/middleman-core/extension.rb
+++ b/middleman-core/lib/middleman-core/extension.rb
@@ -61,7 +61,7 @@ module Middleman
   # * `app.before_render {|body, path, locs, template_class| ... }` - Manipulate template sources before they are rendered.
   # * `app.after_render {|content, path, locs, template_class| ... }` - Manipulate output text after a template has been rendered. It is also common to install a Rack middleware to do this instead.
   # * `app.ready { ... }` - Run code once Middleman is ready to serve or build files (after `after_configuration`).
-  # * `app.compass_config { |compass_config| ... }` - Manipulate the Compass configuration after it has been set up.
+
   #
   # @see http://middlemanapp.com/advanced/custom/ Middleman Custom Extensions Documentation
   class Extension
diff --git a/middleman-core/lib/middleman-core/renderers/sass_functions.rb b/middleman-core/lib/middleman-core/renderers/sass_functions.rb
index 2a587b50..dbe4c015 100644
--- a/middleman-core/lib/middleman-core/renderers/sass_functions.rb
+++ b/middleman-core/lib/middleman-core/renderers/sass_functions.rb
@@ -112,26 +112,3 @@ else
 end
 
 SASS_MODULE::Script::Functions.send :include, ::Middleman::Sass::Functions
-
-# module SASS_MODULE::Script::Functions
-#   include ::Middleman::Sass::Functions
-
-#   # # Hack to ensure previous API declarations (by Compass or whatever)
-#   # # don't take precedence.
-#   # [:asset_path, :asset_url, :image_path, :image_url, :font_path, :font_url, :asset_data_uri].each do |method|
-#   #   defined?(@signatures) && @signatures.delete(method)
-#   # end
-
-#   # declare :asset_path,     [:source], var_kwargs: true
-#   # declare :asset_path,     [:source, :kind]
-#   # declare :asset_url,      [:source], var_kwargs: true
-#   # declare :asset_url,      [:source, :kind]
-#   # declare :image_path,     [:source], var_kwargs: true
-#   # declare :image_url,      [:source], var_kwargs: true
-#   # declare :image_url,      [:source, :only_path]
-#   # declare :image_url,      [:source, :only_path, :cache_buster]
-#   # declare :font_path,      [:source], var_kwargs: true
-#   # declare :font_url,       [:source], var_kwargs: true
-#   # declare :font_url,       [:source, :only_path]
-#   # declare :asset_data_uri, [:source]
-# end