diff --git a/ChangeLog b/ChangeLog
index a487d265bc..9bdf114c10 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Apr 17 11:10:59 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* ext/readline/readline.c: add the defined operator for bcc32.
+
 Wed Apr 16 00:14:06 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
 
 	* misc/ruby-mode.el (ruby-special-char-p): should test at the
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index bc98df92f6..8446a8cb46 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -53,10 +53,10 @@ readline_readline(argc, argv, self)
     buff = (char*)rb_protect((VALUE(*)_((VALUE)))readline, (VALUE)prompt,
                               &status);
     if (status) {
-#if READLINE_40_OR_LATER
+#if defined READLINE_40_OR_LATER
         /* restore terminal mode and signal handler*/
         rl_cleanup_after_signal();
-#elif READLINE_21_OR_LATER
+#elif defined READLINE_21_OR_LATER
         /* restore terminal mode */
         (*rl_deprep_term_function)();
 #else
@@ -722,7 +722,7 @@ Init_readline()
     rb_define_singleton_method(ucomp, "call",
 			       username_completion_proc_call, 1);
     rb_define_const(mReadline, "USERNAME_COMPLETION_PROC", ucomp);
-#if READLINE_21_OR_LATER
+#if defined READLINE_21_OR_LATER
     rb_define_const(mReadline, "VERSION", rb_str_new2(rl_library_version));
 #else
     rb_define_const(mReadline, "VERSION",