diff --git a/app/models/course.rb b/app/models/course.rb
index 63a3c7e..3a71050 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -45,7 +45,11 @@ class Course
     	pd_title = []
 
 	    fields_to_show.each do |t|
-	      fields_to_remove << t if (datas.where(t.to_sym.ne => nil, t.to_sym.ne => "").count == 0 rescue false)
+	      if (self.fields[t].type.to_s == "String" || self.fields[t].type.to_s == "Object" rescue false)
+	        fields_to_remove << t if (datas.where(t.to_sym.ne => nil, t.to_sym.ne => "").count == 0 rescue false)
+	      else
+	        fields_to_remove << t if (datas.where(t.to_sym.ne => nil).count == 0 rescue false)
+	      end
 	      pd_title <<  {
 	          "plugin_data_title" => I18n.t("personal_course.#{t}")
 	        } if !fields_to_remove.include?(t)