diff --git a/ChangeLog b/ChangeLog
index 68ce0da764..808411c45c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Feb 24 17:01:02 2007  Minero Aoki  <aamine@loveruby.net>
+
+	* ext/racc/cparse/cparse.c (cparse_params_mark): remove useless
+	  rb_gc_mark.  Thanks Tomoyuki Chikanaga. [ruby-dev:30405]
+
 Sat Feb 24 16:53:09 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* signal.c (sighandler): need to tell to be interrupted to main
diff --git a/ext/racc/cparse/cparse.c b/ext/racc/cparse/cparse.c
index 197a0eb40b..18a26f670f 100644
--- a/ext/racc/cparse/cparse.c
+++ b/ext/racc/cparse/cparse.c
@@ -393,10 +393,6 @@ cparse_params_mark(void *ptr)
     rb_gc_mark(v->goto_check);
     rb_gc_mark(v->goto_default);
     rb_gc_mark(v->goto_pointer);
-    rb_gc_mark(v->goto_pointer);
-    rb_gc_mark(v->goto_pointer);
-    rb_gc_mark(v->goto_pointer);
-    rb_gc_mark(v->goto_pointer);
     rb_gc_mark(v->reduce_table);
     rb_gc_mark(v->token_table);
     rb_gc_mark(v->state);