diff --git a/Lib/test/test_json/test_tool.py b/Lib/test/test_json/test_tool.py
@@ -2,7 +2,7 @@
import sys
import textwrap
import unittest
-import subprocess
from test import support
from test.support.script_helper import assert_python_ok

@@ -61,12 +61,11 @@ class TestTool(unittest.TestCase):
    """)

    def test_stdin_stdout(self):
-        with subprocess.Popen(
-                (sys.executable, '-m', 'json.tool'),
-                stdin=subprocess.PIPE, stdout=subprocess.PIPE) as proc:
            out, err = proc.communicate(self.data.encode())
        self.assertEqual(out.splitlines(), self.expect.encode().splitlines())
-        self.assertEqual(err, None)

    def _create_infile(self):
        infile = support.TESTFN
@@ -106,3 +105,42 @@ def test_sort_keys_flag(self):
        self.assertEqual(out.splitlines(),
                         self.expect_without_sort_keys.encode().splitlines())
        self.assertEqual(err, b'')