diff --git a/specreduce/tests/test_tracing.py b/specreduce/tests/test_tracing.py
index c1b912f..9cb5ec3 100644
--- a/specreduce/tests/test_tracing.py
+++ b/specreduce/tests/test_tracing.py
@@ -484,4 +484,5 @@ def test_mask_treatment_omit(self, peak_method, expected):
             all_bin_fit = fitter(trace.trace_model, x_bins[mask], y_bins[mask])
             all_bin_fit = all_bin_fit((np.arange(12)))
 
-            np.testing.assert_allclose(trace.trace, all_bin_fit)
\ No newline at end of file
+            np.testing.assert_allclose(trace.trace, all_bin_fit)
+
diff --git a/specreduce/tracing.py b/specreduce/tracing.py
index 130777c..e82292b 100644
--- a/specreduce/tracing.py
+++ b/specreduce/tracing.py
@@ -504,4 +504,4 @@ class KosmosTrace(FitTrace):
     This class is pending deprecation. Please use `FitTrace` instead.
     """
     __doc__ += FitTrace.__doc__
-    pass
\ No newline at end of file
+    pass