diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index a885afe70c91..9f0272fa1269 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -6263,7 +6263,7 @@ def test_zoom_inset():
     fig.canvas.draw()
     xx = np.array([[1.5,  2.],
                    [2.15, 2.5]])
-    assert(np.all(rec.get_bbox().get_points() == xx))
+    assert np.all(rec.get_bbox().get_points() == xx)
     xx = np.array([[0.6325, 0.692308],
                    [0.8425, 0.907692]])
     np.testing.assert_allclose(
diff --git a/lib/matplotlib/tests/test_preprocess_data.py b/lib/matplotlib/tests/test_preprocess_data.py
index 84e40568c9c2..c4013ec27a6e 100644
--- a/lib/matplotlib/tests/test_preprocess_data.py
+++ b/lib/matplotlib/tests/test_preprocess_data.py
@@ -80,7 +80,7 @@ def test_function_call_without_data(func):
 def test_function_call_with_dict_input(func):
     """Tests with dict input, unpacking via preprocess_pipeline"""
     data = {'a': 1, 'b': 2}
-    assert(func(None, data.keys(), data.values()) ==
+    assert (func(None, data.keys(), data.values()) ==
             "x: ['a', 'b'], y: [1, 2], ls: x, w: xyz, label: None")