diff --git a/ChangeLog b/ChangeLog
index c4f496fcc7..549b7bc7e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Nov  4 08:00:00 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
+
+	* test/zlib/test_zlib.rb(test_readchar): compare in same type.
+
 Tue Nov  4 03:28:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* array.c (rb_ary_join): do not repeat self in a recursive array.
diff --git a/test/zlib/test_zlib.rb b/test/zlib/test_zlib.rb
index 5746f036ea..9e4cf80033 100644
--- a/test/zlib/test_zlib.rb
+++ b/test/zlib/test_zlib.rb
@@ -490,7 +490,7 @@ if defined? Zlib
       Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
 
       f = Zlib::GzipReader.open(t.path)
-      "foobar".each_byte {|c| assert_equal(c, f.readchar) }
+      "foobar".each_byte {|c| assert_equal(c, f.readchar.ord) }
       assert_raise(EOFError) { f.readchar }
     end