diff --git a/examples/scripts/functional_parameters.py b/examples/scripts/functional_parameters.py
index cc2d9e4d..60071e08 100644
--- a/examples/scripts/functional_parameters.py
+++ b/examples/scripts/functional_parameters.py
@@ -10,9 +10,8 @@
 # that already exists in the model, for example an exchange current density.
 
 
-# Parameter set and model definition
+# Load default parameter set
 parameter_set = pybop.ParameterSet.pybamm("Chen2020")
-model = pybop.lithium_ion.SPM(parameter_set=parameter_set)
 
 
 # Define a new function using new parameters
@@ -44,6 +43,11 @@ def positive_electrode_exchange_current_density(c_e, c_s_surf, c_s_max, T):
     positive_electrode_exchange_current_density
 )
 
+# Model definition
+model = pybop.lithium_ion.SPM(
+    parameter_set=parameter_set, options={"contact resistance": "true"}
+)
+
 # Fitting parameters
 parameters = pybop.Parameters(
     pybop.Parameter(