diff --git a/ChangeLog b/ChangeLog
index e0d373eb65..0340cb72de 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Mar 18 17:46:35 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
+
+	* lib/drb/drb.rb: do not undef :to_a.
+
 Thu Mar 18 15:27:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* eval.c: remove specialized version of rb_Array().  use simple
diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index 4ebc8a06c4..2f0f96adc9 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -1000,7 +1000,7 @@ module DRb
     end
 
     undef :to_s
-    undef :to_a
+    undef :to_a if respond_to?(:respond_to)
     undef :respond_to?
 
     # Routes method calls to the referenced object.