diff --git a/ChangeLog b/ChangeLog
index b550e8c8d1..d36ff36883 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Feb 14 15:00:16 2011  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* array.c (inspect_ary): don't taint the inspected result of a
+	  recursive array.
+
 Tue Feb 15 15:43:29 2011  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* encoding.c (rb_enc_compatible): change the rule for empty strings:
diff --git a/array.c b/array.c
index 90dcf1c86e..f38e70609f 100644
--- a/array.c
+++ b/array.c
@@ -1743,7 +1743,7 @@ inspect_ary(VALUE ary, VALUE dummy, int recur)
     long i;
     VALUE s, str;
 
-    if (recur) return rb_tainted_str_new2("[...]");
+    if (recur) return rb_usascii_str_new_cstr("[...]");
     str = rb_str_buf_new2("[");
     for (i=0; i<RARRAY_LEN(ary); i++) {
 	s = rb_inspect(RARRAY_PTR(ary)[i]);
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 9440f93ed4..c5d3a53850 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -1693,14 +1693,6 @@ class TestString < Test::Unit::TestCase
     }
   end
 
-  def test_tainted_str_new
-    a = []
-    a << a
-    s = a.inspect
-    assert(s.tainted?)
-    assert_equal("[[...]]", s)
-  end
-
   class S2 < String
   end
   def test_str_new4