diff --git a/lib/fog/core/attributes.rb b/lib/fog/core/attributes.rb
index e9c2840425..2d658ed2eb 100644
--- a/lib/fog/core/attributes.rb
+++ b/lib/fog/core/attributes.rb
@@ -66,6 +66,8 @@ def #{name}=(new_#{name})
             attributes[:#{name}] = [*new_#{name}]
           end
           EOS
+        when :readonly
+          #do not create a setter
         else
           if squash = options[:squash]
             class_eval <<-EOS, __FILE__, __LINE__