diff --git a/ChangeLog b/ChangeLog
index 64680203a4..06e585f1d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,10 @@
-Wed Feb 14 21:12:36 2007  Koichi Sasada  <ko1@atdot.net>
+Wed Feb 14 21:19:47 2007  Koichi Sasada  <ko1@atdot.net>
 
 	* thread_pthread.ci (native_thread_create): adjust 4KB (page size)
 	  alignment.
 
+Wed Feb 14 21:12:36 2007  Koichi Sasada  <ko1@atdot.net>
+
 	* thread_pthread.ci (CHECK_ERR): call rb_bug()
 	  instead of printf() and exit().
 
diff --git a/thread_pthread.ci b/thread_pthread.ci
index 17b9a81431..c259ba4493 100644
--- a/thread_pthread.ci
+++ b/thread_pthread.ci
@@ -230,7 +230,7 @@ native_thread_create(rb_thread_t *th)
     }
     else {
 	pthread_attr_t attr;
-	size_t stack_size = 512 * 1024 - sizeof(int);	/* 512KB */
+	size_t stack_size = 512 * 1024;	/* 512KB */
 
 #ifdef PTHREAD_STACK_MIN
 	if (stack_size < PTHREAD_STACK_MIN) {