diff --git a/ChangeLog b/ChangeLog
index 16e7119723..314dffd37b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Apr 16 10:18:30 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* vm.c (Init_VM): suppress warning: "OPT_BASIC_OPERATIONS" is not
+	  defined.
+
 Fri Apr 15 23:41:18 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* ruby.c (proc_options): reduce warning:
diff --git a/vm.c b/vm.c
index 9528040a9e..bddb4dd8d4 100644
--- a/vm.c
+++ b/vm.c
@@ -2047,10 +2047,6 @@ Init_VM(void)
     rb_ary_push(opts, rb_str_new2("call threaded code"));
 #endif
 
-#if OPT_BASIC_OPERATIONS
-    rb_ary_push(opts, rb_str_new2("optimize basic operation"));
-#endif
-
 #if OPT_STACK_CACHING
     rb_ary_push(opts, rb_str_new2("stack caching"));
 #endif