diff --git a/examples/07_fews.ipynb b/examples/07_fews.ipynb
index 98b28f85..439ed6e1 100644
--- a/examples/07_fews.ipynb
+++ b/examples/07_fews.ipynb
@@ -484,7 +484,7 @@
     "xmlstring = r.text\n",
     "\n",
     "oc = hpd.ObsCollection.from_fews_xml(\n",
-    "    xmlstring=xmlstr,\n",
+    "    xmlstring=xmlstring,\n",
     "    ObsClass=hpd.Obs,\n",
     "    low_memory=False,\n",
     ")\n",