lib/ultra_config/namespace.rb in ultra_config-0.15.0 vs lib/ultra_config/namespace.rb in ultra_config-0.15.1

@@ -60,10 +60,10 @@
 
     def merge_hash!(hash, parents = [])
       hash.each do |k, v|
         options = send_chain(parents)
         if options.objects[k.to_sym].is_a?(Config)
-          options.send("#{k}=", v)
+          options.send("#{k}=", v) unless v.nil?
         elsif options.objects[k.to_sym].is_a?(Namespace)
           merge_hash!(v, parents + [k])
         else
           logger.warn { "received an unknown config #{k} with value #{v} and parents: #{parents}" }
         end
\ No newline at end of file