diff --git a/mrbgems/mruby-time/test/time.rb b/mrbgems/mruby-time/test/time.rb
index 91a6467590..759e2881dc 100644
--- a/mrbgems/mruby-time/test/time.rb
+++ b/mrbgems/mruby-time/test/time.rb
@@ -211,14 +211,3 @@
   end
   t.usec == 0
 end
-
-assert("Time#initialize doens't leave uninitialized object accessible") do
-  assert_raise ArgumentError do
-    $x = Time.new
-    a = Object.new
-    def a.to_i
-      $x.mday
-    end
-    $x.initialize a
-  end
-end