diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index de270583c1..a2242639c7 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -504,30 +504,8 @@ class TestObjSpace < Test::Unit::TestCase
     ;;;
   end
 
-  def test_dump_allocations
-    object = Object.new
-    assert_allocations_count(3) { ObjectSpace.dump(object) }
-  end
-
   def test_anonymous_class_name
-    klass = Class.new
-    assert_allocations_count(4) { ObjectSpace.dump(klass) }
-    assert_allocations_count(3) { ObjectSpace.dump(klass) }
-
-    mod = Module.new
-    assert_allocations_count(3) { ObjectSpace.dump(mod) }
-
     assert_not_include ObjectSpace.dump(Class.new), '"name"'
     assert_not_include ObjectSpace.dump(Module.new), '"name"'
   end
-
-  private
-
-  def assert_allocations_count(count)
-    ObjectSpace.dump(Object.new) # warming up
-
-    before = GC.stat(:total_allocated_objects)
-    yield
-    assert_equal count, GC.stat(:total_allocated_objects) - before
-  end
 end