diff --git a/ChangeLog b/ChangeLog
index 322fc1b89a..6785173db3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Nov 12 17:32:07 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* bcc32/README.bcc32, win32/README.win32: need bison instead of
+	  byacc.
+
 Fri Nov 12 15:15:06 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* eval.c (ruby_options): now we cannot call rb_glob() before
diff --git a/bcc32/README.bcc32 b/bcc32/README.bcc32
index afa5927612..31809e314b 100644
--- a/bcc32/README.bcc32
+++ b/bcc32/README.bcc32
@@ -16,7 +16,7 @@
      * ilink
 
 (3) If you want to build from CVS source, following commands are required.
-     * byacc
+     * bison
      * sed
 
 == How to compile and install
diff --git a/win32/README.win32 b/win32/README.win32
index dffe7c0808..bcb2fa14f8 100644
--- a/win32/README.win32
+++ b/win32/README.win32
@@ -16,7 +16,7 @@
      * dumpbin
 
 (3) If you want to build from CVS source, following commands are required.
-     * byacc
+     * bison
      * sed
 
 == How to compile and install