diff --git a/app/models/colon_head_images_uploader2.rb b/app/models/colon_head_images_uploader2.rb
index d073182..3efd7a9 100644
--- a/app/models/colon_head_images_uploader2.rb
+++ b/app/models/colon_head_images_uploader2.rb
@@ -1,12 +1,7 @@
 # encoding: utf-8
-require 'carrierwave/processing/mime_types'
 
 class ColonHeadImagesUploader2 < CarrierWave::Uploader::Base
 
-  include CarrierWave::MimeTypes
-    
-  process :set_content_type
-
   # Include RMagick or ImageScience support:
   # include CarrierWave::RMagick
   # include CarrierWave::ImageScience
diff --git a/app/models/coloncancer_predict_mapping_file2.rb b/app/models/coloncancer_predict_mapping_file2.rb
index 3556a48..124050f 100644
--- a/app/models/coloncancer_predict_mapping_file2.rb
+++ b/app/models/coloncancer_predict_mapping_file2.rb
@@ -1,9 +1,7 @@
 # encoding: utf-8
 class ColoncancerPredictMappingFile2
-  require 'carrierwave/processing/mime_types'
   include Mongoid::Document
   include Mongoid::Timestamps
-  include CarrierWave::MimeTypes
   mount_uploader :temp_file, ColonHeadImagesUploader2
   
   def file_identifier