diff --git a/ChangeLog b/ChangeLog
index 94a4a637b5..4952787aae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,10 @@ Fri Aug  8 12:33:17 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
 	* bcc32/Makefile.sub: rubyw.exe should be a Windows GUI program.
 	  add the -aa option to WLDFLAGS.
 
+Fri Aug  8 11:29:26 2003  Koji Arai  <jca02266@nifty.ne.jp>
+
+	* marshal.c (w_object): should set `c_arg' at first.
+
 Fri Aug  8 03:22:28 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* lib/webrick/httputils.rb (FormData#list): should not take
diff --git a/marshal.c b/marshal.c
index 03992f6bdd..84125f767e 100644
--- a/marshal.c
+++ b/marshal.c
@@ -434,6 +434,10 @@ w_object(obj, arg, limit)
 	rb_raise(rb_eArgError, "exceed depth limit");
     }
 
+    limit--;
+    c_arg.limit = limit;
+    c_arg.arg = arg;
+
     if (ivtbl = rb_generic_ivar_table(obj)) {
 	w_byte(TYPE_IVAR, arg);
     }
@@ -466,10 +470,6 @@ w_object(obj, arg, limit)
     else {
 	long num;
 
-	limit--;
-	c_arg.limit = limit;
-	c_arg.arg = arg;
-
 	if (st_lookup(arg->data, obj, &num)) {
 	    w_byte(TYPE_LINK, arg);
 	    w_long(num, arg);