diff --git a/Gemfile.lock b/Gemfile.lock
index 24843a91..d9559e14 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    compass (0.12.0.alpha.0.5f2cf88)
+    compass (0.12.0.alpha.0.e49581c)
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.1)
diff --git a/lib/compass/sass_extensions/sprites/layout_methods.rb b/lib/compass/sass_extensions/sprites/layout_methods.rb
index 5a030231..2b6a6142 100644
--- a/lib/compass/sass_extensions/sprites/layout_methods.rb
+++ b/lib/compass/sass_extensions/sprites/layout_methods.rb
@@ -23,8 +23,6 @@ module Compass
         def compute_image_positions!
           case @kwargs.get_var('layout').value
           when SMART
-            require 'compass/sass_extensions/sprites/image_row'
-            require 'compass/sass_extensions/sprites/row_fitter'
             calculate_smart_positions
           when DIAGONAL
             calculate_diagonal_dimensions