diff --git a/ChangeLog b/ChangeLog
index bc80025662..9926a8ab56 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Mar 28 04:00:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/extmk.rb: MINIRUBY is given via make-flag.
+
 Wed Mar 25 00:20:38 2009  Akinori MUSHA  <knu@iDaemons.org>
 
 	* lib/cgi.rb: $KCODE always holds its value in upper case.
diff --git a/ext/extmk.rb b/ext/extmk.rb
index ca2fce937a..af28580174 100644
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -349,7 +349,7 @@ end
 
 EXEEXT = CONFIG['EXEEXT']
 if CROSS_COMPILING
-  $ruby = CONFIG['MINIRUBY']
+  $ruby = $mflags.defined?("MINIRUBY") || CONFIG['MINIRUBY']
 elsif sep = config_string('BUILD_FILE_SEPARATOR')
   $ruby = "$(topdir:/=#{sep})#{sep}miniruby" + EXEEXT
 else