diff --git a/app/controllers/admin/import_controller.rb b/app/controllers/admin/import_controller.rb
index ccbf3e8..85778d4 100644
--- a/app/controllers/admin/import_controller.rb
+++ b/app/controllers/admin/import_controller.rb
@@ -876,7 +876,7 @@ class Admin::ImportController < OrbitAdminController
             :publish_date => research["date_of_publication"], 
             :rss2_id => research["rss2_id"])
           
-          if research["file"]
+          if !research["file"].blank?
             research_file = new_research.research_files.new
             research_file.remote_file_url = research["file"]["file"]
             research_file.title_translations = {"en" => research["file"]["name"], "zh_tw" =>  research["file"]["name"]}