diff --git a/app/models/question.rb b/app/models/question.rb
index 08141c4..d7b4b4a 100644
--- a/app/models/question.rb
+++ b/app/models/question.rb
@@ -690,7 +690,7 @@ class Question < ActiveRecord::Base
         UNION ALL
         (SELECT skipper_id vid FROM skips WHERE question_id = #{id})
       ) b GROUP BY b.vid ORDER BY total
-    "), true) || nil
+    ").map{|i| i.to_i}, true) || nil
   end
 
   def upload_to_participation_rate
--
libgit2 0.21.2