diff --git a/ChangeLog b/ChangeLog
index 7477d26ce9..e068044de5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jun  3 19:11:45 2014  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (rb_objspace_free): should not rest_sweep() here.
+	  Some data structures are already freed.
+
 Tue Jun  3 18:43:51 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* test/ruby/test_gc.rb: allocate more objects to invoke GC by newobj.
diff --git a/gc.c b/gc.c
index 82c6eadf2a..da17655a64 100644
--- a/gc.c
+++ b/gc.c
@@ -929,8 +929,6 @@ static void heap_page_free(rb_objspace_t *objspace, struct heap_page *page);
 void
 rb_objspace_free(rb_objspace_t *objspace)
 {
-    gc_rest_sweep(objspace);
-
     if (objspace->profile.records) {
 	free(objspace->profile.records);
 	objspace->profile.records = 0;