diff --git a/ChangeLog b/ChangeLog
index 8f40a713a6..7477d26ce9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+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.
+	  GC allows extending pages depends on heap_increment.
+
 Tue Jun  3 18:01:27 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* gc.c (rb_gc_call_finalizer_at_exit): add
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index 3d0bca6eff..00a49418ac 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -107,7 +107,8 @@ class TestGc < Test::Unit::TestCase
 
   def test_latest_gc_info
     GC.start
-    GC.stat(:heap_free_slot).times{ "a" + "b" }
+    count = GC.stat(:heap_free_slot) + GC.stat(:heap_increment) * GC::INTERNAL_CONSTANTS[:HEAP_OBJ_LIMIT]
+    count.times{ "a" + "b" }
     assert_equal :newobj, GC.latest_gc_info[:gc_by]
 
     GC.start