diff --git a/yt/visualization/tests/test_image_comp_2D_plots.py b/yt/visualization/tests/test_image_comp_2D_plots.py
index 2e56274bb88..b96085f490a 100644
--- a/yt/visualization/tests/test_image_comp_2D_plots.py
+++ b/yt/visualization/tests/test_image_comp_2D_plots.py
@@ -3,7 +3,7 @@
 
 import matplotlib as mpl
 import numpy as np
-import numpy.testing as npt
+import numpy.testing as nptesting
 import pytest
 from matplotlib.colors import SymLogNorm
 
@@ -38,7 +38,7 @@ def test_sliceplot_set_unit_and_zlim_order():
     im0 = p0.plots[field].image._A
     im1 = p1.plots[field].image._A
 
-    npt.assert_allclose(im0, im1)
+    nptesting.assert_allclose(im0, im1)
 
 
 def test_annotation_parse_h():
@@ -69,7 +69,7 @@ def test_annotation_parse_h():
     img2 = p2.plots["gas", "density"].figure.canvas.renderer.buffer_rgba()
 
     # This should be the same image
-    npt.assert_allclose(img1, img2)
+    nptesting.assert_allclose(img1, img2)
 
 
 @pytest.mark.mpl_image_compare
diff --git a/yt/visualization/tests/test_set_zlim.py b/yt/visualization/tests/test_set_zlim.py
index 88869eb492b..5ba7645d5ea 100644
--- a/yt/visualization/tests/test_set_zlim.py
+++ b/yt/visualization/tests/test_set_zlim.py
@@ -1,5 +1,5 @@
 import numpy as np
-import numpy.testing as npt
+import numpy.testing as nptesting
 import pytest
 
 from yt.testing import fake_amr_ds
@@ -24,7 +24,7 @@ def test_float_vmin_then_set_unit():
     p.render()
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, desired_lims)
+    nptesting.assert_almost_equal(new_lims, desired_lims)
 
     # 1 g/cm**3 == 1000 kg/m**3
     p.set_unit(field, "kg/m**3")
@@ -32,7 +32,7 @@ def test_float_vmin_then_set_unit():
 
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, 1000 * desired_lims)
+    nptesting.assert_almost_equal(new_lims, 1000 * desired_lims)
 
 
 def test_set_unit_then_float_vmin():
@@ -70,7 +70,7 @@ def test_reset_zlim():
 
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_array_equal(new_lims, raw_lims)
+    nptesting.assert_array_equal(new_lims, raw_lims)
 
 
 def test_set_dynamic_range_with_vmin():
@@ -86,7 +86,7 @@ def test_set_dynamic_range_with_vmin():
     p.render()
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, (zmin, 2 * zmin))
+    nptesting.assert_almost_equal(new_lims, (zmin, 2 * zmin))
 
 
 def test_set_dynamic_range_with_vmax():
@@ -102,7 +102,7 @@ def test_set_dynamic_range_with_vmax():
     p.render()
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, (zmax / 2, zmax))
+    nptesting.assert_almost_equal(new_lims, (zmax / 2, zmax))
 
 
 def test_set_dynamic_range_with_min():
@@ -121,7 +121,7 @@ def test_set_dynamic_range_with_min():
     p.render()
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, (vmin, 2 * vmin))
+    nptesting.assert_almost_equal(new_lims, (vmin, 2 * vmin))
 
 
 def test_set_dynamic_range_with_None():
@@ -141,4 +141,4 @@ def test_set_dynamic_range_with_None():
     p.render()
     cb = p.plots[field].image.colorbar
     new_lims = np.array((cb.vmin, cb.vmax))
-    npt.assert_almost_equal(new_lims, (vmin, 2 * vmin))
+    nptesting.assert_almost_equal(new_lims, (vmin, 2 * vmin))