diff --git a/lib/compass/configuration.rb b/lib/compass/configuration.rb
index 469c9fd3..ae4f5b95 100644
--- a/lib/compass/configuration.rb
+++ b/lib/compass/configuration.rb
@@ -144,8 +144,9 @@ module Compass
       end
     end
 
-    def mk_http_path(path)
-      hp = http_path[0..-2] if http_path[-1..-1] == "/"
+    def root_relative(path)
+      hp = http_path || default_http_path
+      hp = hp[0..-2] if hp[-1..-1] == "/"
       "#{hp}/#{path}"
     end