diff --git a/ChangeLog b/ChangeLog
index b968eab53e..00f78fe6d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Mar  9 06:42:40 2014  Eric Wong  <e@80x24.org>
+
+	* variable.c (struct global_variable): shrink by 8 bytes on 64-bit
+
 Sat Mar  8 17:42:51 2014  Eric Wong  <e@80x24.org>
 
 	* vm.c (add_opt_method): cleanup to use rb_method_entry_at
diff --git a/variable.c b/variable.c
index d142255a25..c97c210af1 100644
--- a/variable.c
+++ b/variable.c
@@ -424,11 +424,11 @@ struct trace_var {
 
 struct global_variable {
     int   counter;
+    int block_trace;
     void *data;
     gvar_getter_t *getter;
     gvar_setter_t *setter;
     gvar_marker_t *marker;
-    int block_trace;
     struct trace_var *trace;
 };