diff --git a/tests/test_main.py b/tests/test_main.py
index b9b93cb67..39baf0f56 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -14,20 +14,14 @@ class TestMain(TestCase):
         with tempfile.TemporaryDirectory() as temp_dir:
             os.chdir(temp_dir)
             pipe_input = create_input(StringIO(''))
-            save_stdin = sys.stdin
-            sys.stdin = pipe_input
             main([], input=pipe_input, output=DummyOutput())
-            sys.stdin = save_stdin
             pipe_input.close()
 
     def test_main_with_empty_dir_new_file(self):
         with tempfile.TemporaryDirectory() as temp_dir:
             os.chdir(temp_dir)
             pipe_input = create_input(StringIO(''))
-            save_stdin = sys.stdin
-            sys.stdin = pipe_input
             main(["foo.txt"], input=pipe_input, output=DummyOutput())
-            sys.stdin = save_stdin
             pipe_input.close()
             self.assertTrue(os.path.exists("foo.txt"))
 
@@ -36,9 +30,6 @@ class TestMain(TestCase):
             os.chdir(temp_dir)
             subprocess.run(["git", "init"], cwd=temp_dir)
             pipe_input = create_input(StringIO(''))
-            save_stdin = sys.stdin
-            sys.stdin = pipe_input
             main(["--yes", "foo.txt"], input=pipe_input, output=DummyOutput())
-            sys.stdin = save_stdin
             pipe_input.close()
             self.assertTrue(os.path.exists("foo.txt"))