diff --git a/ChangeLog b/ChangeLog
index 310c023c83..f926e2ec0b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Jan 17 13:28:26 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* configure.in: remove DEFS definition.
+
 Tue Jan 16 17:00:50 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
 
 	* lib/net/protocol.rb: ignore EOFError for read.
diff --git a/configure.in b/configure.in
index 0fa637ed04..2a099a0c6b 100644
--- a/configure.in
+++ b/configure.in
@@ -969,5 +969,6 @@ fi
 
 echo "creating config.h"
 tr -d '\015' < confdefs.h > config.h
+: > confdefs.h
 
 AC_OUTPUT($FIRSTMAKEFILE Makefile ext/extmk.rb)