diff --git a/src/napari_matplotlib/tests/baseline/test_histogram_3D.png b/src/napari_matplotlib/tests/baseline/test_histogram_3D.png
index f9320022..484092b1 100644
Binary files a/src/napari_matplotlib/tests/baseline/test_histogram_3D.png and b/src/napari_matplotlib/tests/baseline/test_histogram_3D.png differ
diff --git a/src/napari_matplotlib/tests/baseline/test_slice_3D.png b/src/napari_matplotlib/tests/baseline/test_slice_3D.png
index f5077ea4..30b02e93 100644
Binary files a/src/napari_matplotlib/tests/baseline/test_slice_3D.png and b/src/napari_matplotlib/tests/baseline/test_slice_3D.png differ
diff --git a/src/napari_matplotlib/tests/scatter/baseline/test_scatter_3D.png b/src/napari_matplotlib/tests/scatter/baseline/test_scatter_3D.png
new file mode 100644
index 00000000..6238d89d
Binary files /dev/null and b/src/napari_matplotlib/tests/scatter/baseline/test_scatter_3D.png differ
diff --git a/src/napari_matplotlib/tests/scatter/test_scatter.py b/src/napari_matplotlib/tests/scatter/test_scatter.py
index 05b7856b..493e9ab8 100644
--- a/src/napari_matplotlib/tests/scatter/test_scatter.py
+++ b/src/napari_matplotlib/tests/scatter/test_scatter.py
@@ -23,3 +23,26 @@ def test_scatter_2D(make_napari_viewer, astronaut_data):
     viewer.layers.selection.add(viewer.layers[0])
     viewer.layers.selection.add(viewer.layers[1])
     return deepcopy(fig)
+
+
+@pytest.mark.mpl_image_compare
+def test_scatter_3D(make_napari_viewer, brain_data):
+    viewer = make_napari_viewer()
+    widget = ScatterWidget(viewer)
+    fig = widget.figure
+
+    viewer.add_image(brain_data[0], **brain_data[1], name="brain")
+
+    viewer.add_image(
+        brain_data[0] * -1, **brain_data[1], name="brain_reversed"
+    )
+    # De-select existing selection
+    viewer.layers.selection.clear()
+    axis = viewer.dims.last_used
+    slice_no = brain_data[0].shape[0] - 1
+    viewer.dims.set_current_step(axis, slice_no)
+    # Select images
+    viewer.layers.selection.add(viewer.layers[0])
+    viewer.layers.selection.add(viewer.layers[1])
+
+    return deepcopy(fig)
diff --git a/src/napari_matplotlib/tests/test_histogram.py b/src/napari_matplotlib/tests/test_histogram.py
index 14375887..9ecc0f01 100644
--- a/src/napari_matplotlib/tests/test_histogram.py
+++ b/src/napari_matplotlib/tests/test_histogram.py
@@ -23,6 +23,9 @@ def test_histogram_2D(make_napari_viewer, astronaut_data):
 def test_histogram_3D(make_napari_viewer, brain_data):
     viewer = make_napari_viewer()
     viewer.add_image(brain_data[0], **brain_data[1])
+    axis = viewer.dims.last_used
+    slice_no = brain_data[0].shape[0] - 1
+    viewer.dims.set_current_step(axis, slice_no)
     fig = HistogramWidget(viewer).figure
     # Need to return a copy, as original figure is too eagerley garbage
     # collected by the widget
diff --git a/src/napari_matplotlib/tests/test_slice.py b/src/napari_matplotlib/tests/test_slice.py
index 500d5ec0..b14d8e38 100644
--- a/src/napari_matplotlib/tests/test_slice.py
+++ b/src/napari_matplotlib/tests/test_slice.py
@@ -9,6 +9,9 @@
 def test_slice_3D(make_napari_viewer, brain_data):
     viewer = make_napari_viewer()
     viewer.add_image(brain_data[0], **brain_data[1])
+    axis = viewer.dims.last_used
+    slice_no = brain_data[0].shape[0] - 1
+    viewer.dims.set_current_step(axis, slice_no)
     fig = SliceWidget(viewer).figure
     # Need to return a copy, as original figure is too eagerley garbage
     # collected by the widget