diff --git a/app/controllers/admin/journal_papers_controller.rb b/app/controllers/admin/journal_papers_controller.rb
index 9e9f8c5..d878883 100644
--- a/app/controllers/admin/journal_papers_controller.rb
+++ b/app/controllers/admin/journal_papers_controller.rb
@@ -50,7 +50,7 @@ class Admin::JournalPapersController < OrbitMemberController
       @journals.each do |key,value|
         @journals[key] = value.group_by{|v| [get_level_type(v),get_author_type(v),get_paper_type(v),get_publication_date(v)]}
         @journals[key].each do |key1,value1|
-          if value1.length==1
+          if value1.length<=1
             @journals[key].delete key1
           end
         end