diff --git a/flint/coadd/linmos.py b/flint/coadd/linmos.py
index 8fc15896..9b4fa0ad 100644
--- a/flint/coadd/linmos.py
+++ b/flint/coadd/linmos.py
@@ -277,8 +277,8 @@ def generate_linmos_parameter_set(
     logger.info(f"{len(img_str)} unique images from {len(images)} input collection. ")
     img_list: str = "[" + ",".join(img_str) + "]"
 
-    assert len(set(img_str)) == len(
-        images
+    assert (
+        len(set(img_str)) == len(images)
     ), "Some images were dropped from the linmos image string. Something is bad, walk the plank. "
 
     # If no weights_list has been provided (and therefore no optimal
diff --git a/tests/test_linmos_coadd.py b/tests/test_linmos_coadd.py
index 98d6dafb..b156b35d 100644
--- a/tests/test_linmos_coadd.py
+++ b/tests/test_linmos_coadd.py
@@ -3,10 +3,10 @@
 some of trhe helper functions around it.
 """
 
-import pytest
 from pathlib import Path
 
 import numpy as np
+import pytest
 from astropy.io import fits
 
 from flint.coadd.linmos import BoundingBox, create_bound_box, trim_fits_image