diff --git a/tests/unit/completion/test_models.py b/tests/unit/completion/test_models.py
index 1c39b6ea2..572291eb0 100644
--- a/tests/unit/completion/test_models.py
+++ b/tests/unit/completion/test_models.py
@@ -238,7 +238,7 @@ def test_tab_completion(stubs, qtbot, app_stub, win_registry,
 
 
 def test_tab_completion_delete(stubs, qtbot, app_stub, win_registry,
-                               tabbed_browser_stubs):
+                               tabbed_browser_stubs, qtbot):
     """Verify closing a tab by deleting it from the completion widget."""
     tabbed_browser_stubs[0].tabs = [
         stubs.FakeWebView(QUrl('https://github.com'), 'GitHub', 0),
@@ -250,6 +250,7 @@ def test_tab_completion_delete(stubs, qtbot, app_stub, win_registry,
     ]
     model = miscmodels.TabCompletionModel()
     view = _mock_view_index(model, 0, 1)
+    qtbot.add_widget(view)
     model.delete_cur_item(view)
     actual = [tab.url() for tab in tabbed_browser_stubs[0].tabs]
     assert actual == [QUrl('https://github.com'),