diff --git a/lib/active_file/site.rb b/lib/active_file/site.rb
index 260b84ab88..fc098e694f 100644
--- a/lib/active_file/site.rb
+++ b/lib/active_file/site.rb
@@ -4,6 +4,8 @@ class ActiveFile::Site
     begin
       require "active_file/site/#{site.to_s.downcase}_site"
       ActiveFile::Site.const_get(:"#{site}Site").new(**options)
+    rescue LoadError
+      puts "Couldn't configure unknow site: #{site}"
     end
   end