diff --git a/doc/notebooks/ntc_voltage_to_temperature.ipynb b/doc/notebooks/ntc_voltage_to_temperature.ipynb
index 33104b3..11398d6 100644
--- a/doc/notebooks/ntc_voltage_to_temperature.ipynb
+++ b/doc/notebooks/ntc_voltage_to_temperature.ipynb
@@ -18,7 +18,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "B = 4125\n",
+    "B = 4450\n",
     "v_r1 = np.arange(0.02, 3.3, 0.02)\n",
     "r1 = 10.0e3\n",
     "ln_r_nom = np.log(47.0e3)"