diff --git a/scatcluster/processing/scattering.py b/scatcluster/processing/scattering.py
index c939aa4..e82244b 100644
--- a/scatcluster/processing/scattering.py
+++ b/scatcluster/processing/scattering.py
@@ -630,9 +630,7 @@ def plot_scattering_coefficients_normalisation(self, **kwargs):
 
         Parameters:
             self (object): The instance of the class.
-
-        Returns:
-            None
+            **kwargs (dict): Additional keyword arguments to pass to the `plt.subplots` function.
         """
         kwargs['figsize'] = (10, 7) if kwargs.get('figsize') is None else kwargs.get('figsize')
         scat_vec = self.vectorize_scattering_coefficients_xarray(self.load_scattering_coefficients_xarray())