diff --git a/examples/fitting_a_hh_neuron/main.py b/examples/fitting_a_hh_neuron/main.py
index 799b65f..220723f 100644
--- a/examples/fitting_a_hh_neuron/main.py
+++ b/examples/fitting_a_hh_neuron/main.py
@@ -19,12 +19,13 @@
 import brainstate as bst
 import braintools as bts
 import brainunit as u
-import dendritex as dx
 import jax
 import matplotlib.pyplot as plt
 import numpy as np
 import pandas as pd
 
+import dendritex as dx
+
 bst.environ.set(dt=0.01 * u.ms)
 
 # Load Input and Output Data
@@ -220,13 +221,13 @@ def visualize_hh_input_and_output():
 
 bounds = {
   'gl': [1e0, 1e2] * u.nS,
-  'g_na': [1e1, 2e2] * u.uS,
-  'g_kd': [1e1, 1e2] * u.uS,
+  'g_na': [1e0, 2e2] * u.uS,
+  'g_kd': [1e0, 1e2] * u.uS,
   'C': [0.1, 2] * u.uF * u.cm ** -2 * area,
 }
 
 
-def fitting_by_others(method='DE', n_sample=200):
+def fitting_by_others(method='DE', n_sample=200, n_iter=20):
   print(f"Method: {method}, n_sample: {n_sample}")
 
   @jax.jit
@@ -242,7 +243,7 @@ def loss_with_multiple_run(**params):
     method=method,
   )
   opt.initialize()
-  param = opt.minimize(10)
+  param = opt.minimize(n_iter)
   loss = compare_potentials(param)
   print(param)
   print(loss)