diff --git a/app/models/tag.rb b/app/models/tag.rb
index 21797a22b..5a9a1a6ec 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -253,7 +253,7 @@ class Tag < ActiveRecord::Base
         return [:gt, parse_cast($1, type)]
 
       when /,/
-        return [:in, range.split(/,/)]
+        return [:in, range.split(/,/).map {|x| parse_cast(x, type)}]
 
       else
         return [:eq, parse_cast(range, type)]