diff --git a/lib/compass/app_integration/rails/installer.rb b/lib/compass/app_integration/rails/installer.rb
index 41072844..37a50681 100644
--- a/lib/compass/app_integration/rails/installer.rb
+++ b/lib/compass/app_integration/rails/installer.rb
@@ -26,7 +26,7 @@ module Compass
         end
 
         def config_files_exist?
-          File.exists?(targetize('config/compass.config')) &&
+          File.exists?(targetize('config/compass.rb')) &&
           File.exists?(targetize('config/initializers/compass.rb'))
         end