diff --git a/app/controllers/protocols_controller.rb b/app/controllers/protocols_controller.rb
index 4fa57881c..581b83e13 100644
--- a/app/controllers/protocols_controller.rb
+++ b/app/controllers/protocols_controller.rb
@@ -610,7 +610,7 @@ class ProtocolsController < ApplicationController
       end
       return 0 # return 0 stops the rest of the controller code from executing
     end
-    if file_size / 1000 > Constants::FILE_MAX_SIZE_MB
+    if file_size > Constants::FILE_MAX_SIZE_MB.megabytes
       @protocolsio_too_big = true
       respond_to do |format|
         format.js {}