diff --git a/ChangeLog b/ChangeLog
index d2fc6ee362..6345cbf8c2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun May 12 17:08:16 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* configure.in: removes AC_CHECK_FUNCS(pause) because it's unused.
+
 Sun May 12 17:05:18 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* signal.c (rb_f_kill): fixes typo. s/HAS_KILLPG/HAVE_KILLPG/.
diff --git a/configure.in b/configure.in
index 69d8aa33d9..5c78e10f1c 100644
--- a/configure.in
+++ b/configure.in
@@ -1772,7 +1772,6 @@ AC_CHECK_FUNCS(lstat)
 AC_CHECK_FUNCS(mblen)
 AC_CHECK_FUNCS(memalign)
 AC_CHECK_FUNCS(mktime)
-AC_CHECK_FUNCS(pause)
 AC_CHECK_FUNCS(pipe2)
 AC_CHECK_FUNCS(poll)
 AC_CHECK_FUNCS(posix_fadvise)