1 files changed, 3 insertions, 2 deletions
diff --git a/app/helpers/sort_helper.rb b/app/helpers/sort_helper.rb
index fd797951a..13beed3c2 100644
--- a/app/helpers/sort_helper.rb
+++ b/app/helpers/sort_helper.rb
@@ -80,12 +80,13 @@ module SortHelper
       @criteria.collect {|k,o| k + (o ? '' : ':desc')}.join(',')
     end
 
+    # Returns an array of SQL fragments used to sort the list
     def to_sql
       sql = @criteria.collect do |k,o|
         if s = @available_criteria[k]
-          (o ? s.to_a : s.to_a.collect {|c| append_desc(c)}).join(', ')
+          (o ? s.to_a : s.to_a.collect {|c| append_desc(c)})
         end
-      end.compact.join(', ')
+      end.flatten.compact
       sql.blank? ? nil : sql
     end