diff --git a/ChangeLog b/ChangeLog
index eb72eacc11..3e4c25364b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Nov  1 18:11:18 2003  Akinori MUSHA  <knu@iDaemons.org>
+
+	* ext/io/wait/wait.c: #include <sys/time.h> is needed for struct
+	  timeval.
+
 Sat Nov  1 01:49:03 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
 
 	* lib/soap/mapping/factory.rb: mark marshalled basetype objects when
diff --git a/ext/io/wait/wait.c b/ext/io/wait/wait.c
index 53d5bd7d18..417841a8a1 100644
--- a/ext/io/wait/wait.c
+++ b/ext/io/wait/wait.c
@@ -14,6 +14,7 @@
 #include "ruby.h"
 #include "rubyio.h"
 
+#include <sys/time.h>
 #include <sys/types.h>
 #include FIONREAD_HEADER