diff --git a/ChangeLog b/ChangeLog
index 9de2d49cc5..f2fbc0b0b7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jul 11 15:54:24 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* process.c: removed signal() macro. It's no longer used.
+
 Mon Jul 11 15:02:24 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* numeric.c (rb_num2ull): use FIX2LONG instead of FIX2ULONG. see
diff --git a/process.c b/process.c
index d811867055..5abdb65e34 100644
--- a/process.c
+++ b/process.c
@@ -980,10 +980,6 @@ static int forked_child = 0;
 static RETSIGTYPE (*saved_sigpipe_handler)(int) = 0;
 #endif
 
-#if defined(POSIX_SIGNAL)
-# define signal(a,b) posix_signal((a),(b))
-#endif
-
 #ifdef SIGPIPE
 static RETSIGTYPE sig_do_nothing(int sig)
 {