diff --git a/ChangeLog b/ChangeLog
index e0f55f38a9..e9ed4baaf4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,8 @@ Thu Dec  4 13:56:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 	* ext/curses/curses.c (window_getch): avoid ISPRINT() macro which
 	  has an issue with OpenSolaris.  [ruby-core:20189]
 
+	* ext/curses/curses.c (curses_getch): no ISPRINT(). [ruby-core:20294]
+
 	* signal.c (ruby_signal): EINVAL from sigaction(2) is not a bug.
 
 Thu Dec  4 11:40:56 2008  Akinori MUSHA  <knu@iDaemons.org>
diff --git a/ext/curses/curses.c b/ext/curses/curses.c
index 4187478894..b16d824169 100644
--- a/ext/curses/curses.c
+++ b/ext/curses/curses.c
@@ -1131,7 +1131,7 @@ window_getch(VALUE obj)
     GetWINDOW(obj, winp);
     c = wgetch(winp->window);
     if (c == EOF) return Qnil;
-    if (ISPRINT(c)) {
+    if (rb_isprint(c)) {
 	char ch = (char)c;
 
 	return rb_locale_str_new(&ch, 1);