diff --git a/middleman-core/lib/middleman-core/file_renderer.rb b/middleman-core/lib/middleman-core/file_renderer.rb
index 67cea5b4..e103fcd1 100644
--- a/middleman-core/lib/middleman-core/file_renderer.rb
+++ b/middleman-core/lib/middleman-core/file_renderer.rb
@@ -67,7 +67,12 @@ module Middleman
 
       # Allow hooks to manipulate the result after render
       @app.class.callbacks_for_hook(:after_render).each do |callback|
-        content = callback.call(content, path, locs, template_class)
+        # Uber::Options::Value doesn't respond to call
+        if callback.respond_to?(:call)
+          content = callback.call(content, path, locs, template_class)
+        elsif callback.respond_to?(:evaluate)
+          content = callback.evaluate(self, content, path, locs, template_class)
+        end
       end
 
       output = ::ActiveSupport::SafeBuffer.new ''
diff --git a/middleman-core/lib/middleman-core/renderers/sass.rb b/middleman-core/lib/middleman-core/renderers/sass.rb
index 2514f2da..9c7a237a 100644
--- a/middleman-core/lib/middleman-core/renderers/sass.rb
+++ b/middleman-core/lib/middleman-core/renderers/sass.rb
@@ -1,6 +1,35 @@
 require 'sass'
 require 'compass/import-once'
 
+GLOB = /\*|\[.+\]/
+
+# Hack around broken sass globs when combined with import-once
+# Targets compass-import-once 1.0.4
+# Tracking issue: https://github.com/chriseppstein/compass/issues/1529
+module Compass
+  module ImportOnce
+    module Importer
+      def find_relative(uri, base, options, *args)
+        if uri =~ GLOB
+          force_import = true
+        else
+          uri, force_import = handle_force_import(uri)
+        end
+        maybe_replace_with_dummy_engine(super(uri, base, options, *args), options, force_import)
+      end
+
+      def find(uri, options, *args)
+        if uri =~ GLOB
+          force_import = true
+        else
+          uri, force_import = handle_force_import(uri)
+        end
+        maybe_replace_with_dummy_engine(super(uri, options, *args), options, force_import)
+      end
+    end
+  end
+end
+
 module Middleman
   module Renderers
     # Sass renderer
diff --git a/middleman/middleman.gemspec b/middleman/middleman.gemspec
index 91bc1e91..bdb77455 100644
--- a/middleman/middleman.gemspec
+++ b/middleman/middleman.gemspec
@@ -24,6 +24,7 @@ Gem::Specification.new do |s|
   s.add_dependency('middleman-sprockets', '>= 3.1.2')
   s.add_dependency('haml', ['>= 4.0.5'])
   s.add_dependency('sass', ['>= 3.3.4'])
+  s.add_dependency("compass-import-once", ["1.0.4"])
   s.add_dependency('compass', ['>= 1.0.0.alpha.19'])
   s.add_dependency('uglifier', ['~> 2.5'])
   s.add_dependency('coffee-script', ['~> 2.2.0'])