diff --git a/pybop/models/lithium_ion/weppner_huggins.py b/pybop/models/lithium_ion/weppner_huggins.py
index 85e7b3456..d656ea72c 100644
--- a/pybop/models/lithium_ion/weppner_huggins.py
+++ b/pybop/models/lithium_ion/weppner_huggins.py
@@ -83,7 +83,7 @@ def __init__(self, name="Weppner & Huggins model"):
     @property
     def default_geometry(self):
         return {}
-    
+
     @property
     def default_parameter_values(self):
         parameter_values = pybamm.ParameterValues("Xu2019")
diff --git a/tests/unit/test_models.py b/tests/unit/test_models.py
index d804803b1..3137f6f2e 100644
--- a/tests/unit/test_models.py
+++ b/tests/unit/test_models.py
@@ -65,7 +65,7 @@ def test_predict_with_inputs(self, model):
             if model.pybamm_model.options["working electrode"] == "positive":
                 inputs = {
                     "Positive electrode active material volume fraction": 0.63,
-                }                
+                }
             else:
                 inputs = {
                     "Negative electrode active material volume fraction": 0.52,