diff --git a/test/completion/conftest.py b/test/completion/conftest.py
index c7c14978..7957be9a 100644
--- a/test/completion/conftest.py
+++ b/test/completion/conftest.py
@@ -23,7 +23,7 @@ def inheritance_fixture():
 
 
 @pytest.fixture
-def testdir(testdir):
-    #? ['chdir']
-    testdir.chdir
-    return testdir
+def capsysbinary(capsysbinary):
+    #? ['close']
+    capsysbinary.clos
+    return capsysbinary