diff --git a/tests/core/test_widget.py b/tests/core/test_widget.py
index 3d300c4..011e09b 100644
--- a/tests/core/test_widget.py
+++ b/tests/core/test_widget.py
@@ -28,11 +28,11 @@ class widget(unittest.TestCase):
     def test_callable_fulltext(self):
         newWidget = core.widget.Widget(full_text=self.someCallback)
         self.assertEqual(newWidget.full_text(), self.callbackReturnValue)
-        self.someCallback.assert_called_once()
+        self.someCallback.assert_called_once_with(unittest.mock.ANY)
 
     def test_set_callable_fulltext(self):
         self.someWidget.full_text(self.someCallback)
         self.assertEqual(self.someWidget.full_text(), self.callbackReturnValue)
-        self.someCallback.assert_called_once()
+        self.someCallback.assert_called_once_with(unittest.mock.ANY)
 
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