diff --git a/docs/notebooks/modelbuilder_example.ipynb b/docs/notebooks/modelbuilder_example.ipynb
index 26c02c2f..ffd14fc2 100644
--- a/docs/notebooks/modelbuilder_example.ipynb
+++ b/docs/notebooks/modelbuilder_example.ipynb
@@ -1037,7 +1037,7 @@
     "\n",
     "# update wind settings\n",
     "mdu.wind.icdtyp = 4\n",
-    "mdu.wind.cdbreakpoints = ['0.025'] # overwritten by spacevarying charnock from ERA5\n",
+    "mdu.wind.cdbreakpoints = [0.025] # overwritten by spacevarying charnock from ERA5\n",
     "\n",
     "# update time settings\n",
     "mdu.time.refdate = pd.Timestamp(ref_date).strftime('%Y%m%d')\n",