diff --git a/tests/test_command_shell.py b/tests/test_command_shell.py
index 5dcf2f519..cf8b0ec60 100644
--- a/tests/test_command_shell.py
+++ b/tests/test_command_shell.py
@@ -159,7 +159,9 @@ class TestInteractiveShell:
         p.expect_exact("HtmlResponse")
         p.sendeof()
         p.wait()  # type: ignore[no-untyped-call]
-        p.proc.stdin.close()
-        p.proc.stdout.close()
+        if p.proc.stdin:
+            p.proc.stdin.close()
+        if p.proc.stdout:
+            p.proc.stdout.close()
         logfile.seek(0)
         assert "Traceback" not in logfile.read().decode()
diff --git a/tests/test_crawler_subprocess.py b/tests/test_crawler_subprocess.py
index caedb7700..e3f9ac161 100644
--- a/tests/test_crawler_subprocess.py
+++ b/tests/test_crawler_subprocess.py
@@ -215,8 +215,10 @@ class TestCrawlerProcessSubprocessBase(ScriptRunnerMixin):
         p.expect_exact("shutting down gracefully")
         p.expect_exact("Spider closed (shutdown)")
         p.wait()  # type: ignore[no-untyped-call]
-        p.proc.stdin.close()
-        p.proc.stdout.close()
+        if p.proc.stdin:
+            p.proc.stdin.close()
+        if p.proc.stdout:
+            p.proc.stdout.close()
 
     def test_shutdown_graceful(self) -> None:
         self._test_shutdown_graceful()
@@ -234,8 +236,10 @@ class TestCrawlerProcessSubprocessBase(ScriptRunnerMixin):
         p.kill(sig)
         p.expect_exact("forcing unclean shutdown")
         p.wait()  # type: ignore[no-untyped-call]
-        p.proc.stdin.close()
-        p.proc.stdout.close()
+        if p.proc.stdin:
+            p.proc.stdin.close()
+        if p.proc.stdout:
+            p.proc.stdout.close()
 
     @coroutine_test
     async def test_shutdown_forced(self) -> None:
diff --git a/tests/test_extension_telnet.py b/tests/test_extension_telnet.py
index f560efb04..20c801558 100644
--- a/tests/test_extension_telnet.py
+++ b/tests/test_extension_telnet.py
@@ -36,7 +36,7 @@ def _get_console_and_portal(
     console = TelnetConsole(crawler)
 
     # This function has some side effects we don't need for this test
-    console._get_telnet_vars = dict
+    console._get_telnet_vars = dict  # type: ignore[method-assign]
 
     console.start_listening()
     protocol = console.protocol()