diff --git a/app/models/journal_paper.rb b/app/models/journal_paper.rb
index 67b2984..d1831c1 100644
--- a/app/models/journal_paper.rb
+++ b/app/models/journal_paper.rb
@@ -123,7 +123,7 @@ class JournalPaper
           when "level_type"
             pd_data << {"data_title" => ( !p.journal_levels.blank? ? "(#{p.journal_levels.collect{|x| x.title}.join(', ')})" : nil)}
           when "publication_date"
-            pd_data << {"data_title" => (p.send(t).strftime("%Y/%m/%d") rescue "")}
+            pd_data << {"data_title" => (p.send(t).strftime("%Y/%m") rescue "")}
           when "author_type"
             pd_data << {"data_title" => (p.journal_paper_author_types.collect{|jat| jat.title}.join(", ") rescue "")}
           else