diff --git a/ChangeLog b/ChangeLog
index 5966324c6c..6aad90da8f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jun 27 22:06:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* thread_pthread.c (consume_communication_pipe): don't use C99
+	  style variable length array.
+
 Mon Jun 27 22:04:27 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* thread_pthread.c (consume_communication_pipe): change return
diff --git a/thread_pthread.c b/thread_pthread.c
index cd1631261d..0a4208adb8 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1022,7 +1022,7 @@ static void
 consume_communication_pipe(void)
 {
     const size_t buff_size = 1024;
-    char buff[buff_size];
+    char buff[1024];
     ssize_t result;
   retry:
     result = read(timer_thread_pipe[0], buff, buff_size);