diff --git a/tests/outlier_detection/test_median.py b/tests/outlier_detection/test_median.py
index 06990f6e..3de71a87 100644
--- a/tests/outlier_detection/test_median.py
+++ b/tests/outlier_detection/test_median.py
@@ -6,8 +6,8 @@
 
 from stcal.outlier_detection.median import (
     DiskAppendableArray,
-    OnDiskMedian,
     MedianComputer,
+    OnDiskMedian,
     nanmedian3D,
 )
 
@@ -56,7 +56,7 @@ def test_disk_appendable_array(tmpdir):
 
 def test_disk_appendable_array_bad_inputs(tmpdir):
 
-    slice_shape = (8,7)
+    slice_shape = (8, 7)
     dtype = "float32"
     tempdir = tmpdir / Path("tmptest")
     fname = "test.bin"