diff --git a/ChangeLog b/ChangeLog
index 74301d4b93..1febdabba7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Dec  6 23:56:14 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* Makefile.in, common.mk (NULLCMD): moved for platforms that empty
+	  command does not run.  fixed: [ruby-dev:29994]
+
 Tue Dec  5 19:01:42 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* configure.in (SITE_DIR): fixed to emtpy RUBY_SITE_LIB in config.h on
diff --git a/Makefile.in b/Makefile.in
index d5d2b9f3ed..7acd0e05d9 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,4 +1,5 @@
 SHELL = /bin/sh
+NULLCMD = :
 
 #### Start of system configuration section. ####
 
diff --git a/common.mk b/common.mk
index 1fabb641c5..aafa8a0b3f 100644
--- a/common.mk
+++ b/common.mk
@@ -3,7 +3,6 @@ lib: $(LIBRUBY)
 dll: $(LIBRUBY_SO)
 
 RUBYOPT       =
-NULLCMD       =
 
 STATIC_RUBY   = static-ruby