diff --git a/test/json_gem/json_common_interface_test.rb b/test/json_gem/json_common_interface_test.rb
index 1008ba8d..94af3a1e 100755
--- a/test/json_gem/json_common_interface_test.rb
+++ b/test/json_gem/json_common_interface_test.rb
@@ -128,8 +128,8 @@ def test_dump
     too_deep = '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'
     assert_equal too_deep, JSON.dump(eval(too_deep))
     assert_kind_of String, Marshal.dump(eval(too_deep))
-    assert_raise(NestingError) { JSON.dump(eval(too_deep), 100) }
-    assert_raise(NestingError) { Marshal.dump(eval(too_deep), 100) }
+    assert_raise(JSON::NestingError) { JSON.dump(eval(too_deep), 100) }
+    assert_raise(ArgumentError) { Marshal.dump(eval(too_deep), 100) }
     assert_equal too_deep, JSON.dump(eval(too_deep), 101)
     assert_kind_of String, Marshal.dump(eval(too_deep), 101)
     output = StringIO.new