diff --git a/app/models/survey/question.rb b/app/models/survey/question.rb
index 0316f43..00a16c1 100644
--- a/app/models/survey/question.rb
+++ b/app/models/survey/question.rb
@@ -14,6 +14,7 @@ class Survey::Question < ActiveRecord::Base
 
   def do_answer(choice_ids, user)
     cid=choice_ids.map{|c|c.to_i}
+    unless cid.empty?
     Survey::Answer.where(user_id: user.id, choice_id: self.choice_ids).delete_all
     cid.each do |c|
       if self.choice_ids.include?(c)
@@ -21,6 +22,7 @@ class Survey::Question < ActiveRecord::Base
       a.save
       end
     end
+    end
   end
 end
 
diff --git a/app/views/survey/questions/_answeredquestion.html.erb b/app/views/survey/questions/_answeredquestion.html.erb
index cdde42c..2e24d4d 100644
--- a/app/views/survey/questions/_answeredquestion.html.erb
+++ b/app/views/survey/questions/_answeredquestion.html.erb
@@ -1,4 +1,9 @@
 <div style="background:red"><b><%= answeredquestion.title%></b>
-<% answeredquestion.choices.each do |c| %>
-<%= c.to_s %><%= answeredquestion.answers.where(choice_id: c.id).count %>n
-<% end %>
+	<ul>
+		<% answeredquestion.choices.each do |c| %>
+			<li>
+				<%= c.to_s %><%= answeredquestion.answers.where(choice_id: c.id).count %>
+			</li>
+		<% end %>
+	</ul>
+</div>
diff --git a/app/views/survey/questions/_question.html.erb b/app/views/survey/questions/_question.html.erb
index f654025..524a06d 100644
--- a/app/views/survey/questions/_question.html.erb
+++ b/app/views/survey/questions/_question.html.erb
@@ -1,7 +1,7 @@
 <div style="background:red"><b><%= question.title%></b>
 <%= semantic_form_for question, url: answer_survey_question_path do |f| %>
 <%= f.input :selected,  as: :check_boxes, collection: question.choices, label: false %>
-
+<%= f.input :selected,  as: :radio, collection: question.choices, label: false %>
     <%= f.action :submit, :as => :input %>
 
 <% end  %>