diff --git a/ChangeLog b/ChangeLog
index da5cb955ad..874c15b9f9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sun Nov 23 10:46:23 2014  Eric Wong  <e@80x24.org>
+
+	* internal.h (struct rb_execarg): 160 => 144 bytes on x86-64
+	* ruby.c (struct load_file_arg): 48 => 40 bytes on x86-64
+	* vm_args.c (struct args_info): ditto
+
 Sun Nov 23 07:46:54 2014  Andy Maloney  <asmaloney@gmail.com>
 
 	* io.c (rb_io_sysread): Remove redundant assignment of 'n'.
diff --git a/internal.h b/internal.h
index e7b866bdd6..af357cd9ac 100644
--- a/internal.h
+++ b/internal.h
@@ -884,7 +884,6 @@ VALUE rb_block_clear_env_self(VALUE proc);
 #define RB_MAX_GROUPS (65536)
 
 struct rb_execarg {
-    int use_shell;
     union {
         struct {
             VALUE shell_script;
@@ -900,6 +899,7 @@ struct rb_execarg {
     VALUE envp_str;
     VALUE envp_buf;
     VALUE dup2_tmpbuf;
+    unsigned use_shell : 1;
     unsigned pgroup_given : 1;
     unsigned umask_given : 1;
     unsigned unsetenv_others_given : 1;
@@ -916,11 +916,11 @@ struct rb_execarg {
     mode_t umask_mask;
     rb_uid_t uid;
     rb_gid_t gid;
+    int close_others_maxhint;
     VALUE fd_dup2;
     VALUE fd_close;
     VALUE fd_open;
     VALUE fd_dup2_child;
-    int close_others_maxhint;
     VALUE env_modification; /* Qfalse or [[k1,v1], ...] */
     VALUE chdir_dir;
 };
diff --git a/ruby.c b/ruby.c
index 4a19276f50..b2f485076d 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1510,9 +1510,9 @@ struct load_file_arg {
     VALUE parser;
     VALUE fname;
     int script;
+    int xflag;
     struct cmdline_options *opt;
     VALUE f;
-    int xflag;
 };
 
 static VALUE
diff --git a/vm_args.c b/vm_args.c
index e4d7fedf0f..207d3ffcde 100644
--- a/vm_args.c
+++ b/vm_args.c
@@ -11,12 +11,12 @@
 struct args_info {
     /* basic args info */
     rb_call_info_t *ci;
-    int argc;
     VALUE *argv;
+    int argc;
 
     /* additional args info */
-    VALUE *kw_argv;
     int rest_index;
+    VALUE *kw_argv;
     VALUE rest;
 };