diff --git a/doc/notebooks/NeuralODEs_I.ipynb b/doc/notebooks/NeuralODEs_I.ipynb
index 1b4ef0f3..28a299e9 100644
--- a/doc/notebooks/NeuralODEs_I.ipynb
+++ b/doc/notebooks/NeuralODEs_I.ipynb
@@ -5,6 +5,7 @@
    "id": "894ad88d",
    "metadata": {},
    "source": [
+    "(tut_neural_ode_1)=\n",
     "# Neural ODEs - I\n",
     "\n",
     "We here consider a generic system in the form:\n",