diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 1254886..d154ccd 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -250,7 +250,7 @@ module ApplicationHelper
       tag_options.merge!(yield(project)) if block_given?
       s << content_tag('option', name_prefix + h(project), tag_options)
     end
-    s
+    s.html_safe
   end
 
   # Yields the given block for each project with its level in the tree