diff --git a/tests/unit/commands/test_runners.py b/tests/unit/commands/test_runners.py
index daa8541e8..4497cb843 100644
--- a/tests/unit/commands/test_runners.py
+++ b/tests/unit/commands/test_runners.py
@@ -80,25 +80,23 @@ class TestCompletions:
 
     """Tests for completions.use_best_match."""
 
-    def test_dont_use_best_match(self, config_stub, monkeypatch):
+    def test_dont_use_best_match(self, config_stub):
         """Test multiple completion options with use_best_match set to false.
 
         Should raise NoSuchCommandError
         """
         config_stub.val.completion.use_best_match = False
-        monkeypatch.setattr('qutebrowser.config', config_stub)
         parser = runners.CommandParser(partial_match=True)
 
         with pytest.raises(cmdexc.NoSuchCommandError):
             result = parser.parse('do')
 
-    def test_use_best_match(self, config_stub, monkeypatch):
+    def test_use_best_match(self, config_stub):
         """Test multiple completion options with use_best_match set to true.
 
         The resulting command should be the best match
         """
         config_stub.val.completion.use_best_match = True
-        monkeypatch.setattr('qutebrowser.config', config_stub)
         parser = runners.CommandParser(partial_match=True)
 
         result = parser.parse('do')