diff --git a/app/helpers/bootstrap_flash_helper.rb b/app/helpers/bootstrap_flash_helper.rb
index 08d1fda8..1dbe6412 100644
--- a/app/helpers/bootstrap_flash_helper.rb
+++ b/app/helpers/bootstrap_flash_helper.rb
@@ -16,7 +16,7 @@ def bootstrap_flash(options = {})
       Array(message).each do |msg|
         text = content_tag(:div,
                            content_tag(:button, raw("×"), :class => "close", "data-dismiss" => "alert") +
-                           msg.html_safe, :class => "alert fade in alert-#{type} #{options[:class]}")
+                           msg.to_s.html_safe, :class => "alert fade in alert-#{type} #{options[:class]}")
         flash_messages << text if msg
       end
     end