diff --git a/middleman-core/lib/middleman-core/renderers/sass.rb b/middleman-core/lib/middleman-core/renderers/sass.rb
index fedc8578..54e40a0e 100644
--- a/middleman-core/lib/middleman-core/renderers/sass.rb
+++ b/middleman-core/lib/middleman-core/renderers/sass.rb
@@ -1,4 +1,5 @@
 require 'sass'
+require 'compass/import-once'
 
 module Middleman
   module Renderers
@@ -26,6 +27,8 @@ module Middleman
           # Tell Tilt to use it as well (for inline scss blocks)
           ::Tilt.register 'scss', ScssPlusCSSFilenameTemplate
           ::Tilt.prefer(ScssPlusCSSFilenameTemplate)
+
+          ::Compass::ImportOnce.activate!
         end
 
         alias :included :registered
diff --git a/middleman/middleman.gemspec b/middleman/middleman.gemspec
index 28af0b83..2e176267 100644
--- a/middleman/middleman.gemspec
+++ b/middleman/middleman.gemspec
@@ -22,6 +22,7 @@ Gem::Specification.new do |s|
   s.add_dependency("middleman-sprockets", ">= 3.1.2")
   s.add_dependency("haml", [">= 4.0.5"])
   s.add_dependency("sass", [">= 3.2.17", "< 4.0"])
+  s.add_dependency("compass-import-once", ["~> 1.0.4"])
   s.add_dependency("compass", [">= 0.12.4"])
   s.add_dependency("uglifier", ["~> 2.5"])
   s.add_dependency("coffee-script", ["~> 2.2.0"])