diff --git a/src/spectrum/utils/two-ray-to-three-gpp-ch-calibration.py b/src/spectrum/utils/two-ray-to-three-gpp-ch-calibration.py
index 441b6b148..73e73e063 100644
--- a/src/spectrum/utils/two-ray-to-three-gpp-ch-calibration.py
+++ b/src/spectrum/utils/two-ray-to-three-gpp-ch-calibration.py
@@ -349,7 +349,7 @@ def fit_ftr_to_reference(
             np.linspace(start=m_and_k_lb, stop=m_and_k_ub, endpoint=True, num=num_params),
         ),
         # delta must be in [0, 1]
-        "delta": np.linspace(start=0.0, stop=1.0, endpoint=True, num=num_params)
+        "delta": np.linspace(start=0.0, stop=1.0, endpoint=True, num=num_params),
         # sigma determined from k, due to the unit-mean constraint
     }
 
@@ -395,7 +395,7 @@ def fit_ftr_to_reference(
                 stop=min(1, best_params.delta + delta_step),
                 endpoint=True,
                 num=num_params,
-            )
+            ),
             # sigma determined from k, due to the unit-mean constraint
         }
 
diff --git a/src/visualizer/visualizer/ipython_view.py b/src/visualizer/visualizer/ipython_view.py
index 27ce0ff0c..98c3b1ec4 100644
--- a/src/visualizer/visualizer/ipython_view.py
+++ b/src/visualizer/visualizer/ipython_view.py
@@ -10,6 +10,7 @@ All rights reserved. This program and the accompanying materials are made
 available under the terms of the BSD which accompanies this distribution, and
 is available at U{http://www.opensource.org/licenses/bsd-license.php}
 """
+
 # this file is a modified version of source code from the Accerciser project
 # https://wiki.gnome.org/Apps/Accerciser