diff --git a/app/models/research.rb b/app/models/research.rb
index 84de7fe..b502fc9 100644
--- a/app/models/research.rb
+++ b/app/models/research.rb
@@ -57,7 +57,7 @@ class Research
     pd_title = []
 
     fields_to_show.each do |t|
-      fields_to_remove << t if datas.where(t.to_sym.ne => nil).count == 0
+      fields_to_remove << t if (datas.where(t.to_sym.ne => nil, t.to_sym.ne => "").count == 0 rescue false)
       pd_title <<  {
           "plugin_data_title" => I18n.t("personal_research.#{t}")
         } if !fields_to_remove.include?(t)