diff --git a/app/controllers/tasks_controller.rb b/app/controllers/tasks_controller.rb
--- a/app/controllers/tasks_controller.rb
+++ b/app/controllers/tasks_controller.rb
@@ -60,7 +60,7 @@
         content_type = 'application/octet-stream'
       end
 
-      send_file filename, :stream => false, :filename => base_filename, :type => content_type
+      send_file filename, :stream => false, :disposition => 'inline', :filename => base_filename, :type => content_type
     end
   end
 
diff --git a/config/initializers/mime_types.rb b/config/initializers/mime_types.rb
--- a/config/initializers/mime_types.rb
+++ b/config/initializers/mime_types.rb
@@ -3,3 +3,4 @@
 # Add new mime types for use in respond_to blocks:
 # Mime::Type.register "text/richtext", :rtf
 # Mime::Type.register_alias "text/html", :iphone
+Mime::Type.register 'application/pdf', :pdf