1 files changed, 9 insertions, 0 deletions
diff --git a/lib/delegate.rb b/lib/delegate.rb
index a14d62cf5b..ee574cb02b 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -75,6 +75,11 @@ class SimpleDelegator<Delegator
   def __setobj__(obj)
     @_sd_obj = obj
   end
+
+  def initialize_copy(obj)
+    super
+    __setobj__(obj.__getobj__.clone)
+  end
 end
 
 # backward compatibility ^_^;;;
@@ -103,6 +108,10 @@ def DelegateClass(superclass)
     def __setobj__(obj)
       @_dc_obj = obj
     end
+    def initialize_copy(obj)
+      super
+    __setobj__(obj.__getobj__.clone)
+    end
   }
   for method in methods
     begin