diff --git a/examples/memory/manage-conversation-history.ipynb b/examples/memory/manage-conversation-history.ipynb
index 94da14225..2cdeb85d0 100644
--- a/examples/memory/manage-conversation-history.ipynb
+++ b/examples/memory/manage-conversation-history.ipynb
@@ -138,7 +138,7 @@
     "\n",
     "# Define the function that calls the model\n",
     "def call_model(state: MessagesState):\n",
-    "    response = model.invoke(state[\"messages\"])\n",
+    "    response = bound_model.invoke(state[\"messages\"])\n",
     "    # We return a list, because this will get added to the existing list\n",
     "    return {\"messages\": response}\n",
     "\n",
@@ -275,7 +275,7 @@
     "# Define the function that calls the model\n",
     "def call_model(state: MessagesState):\n",
     "    messages = filter_messages(state[\"messages\"])\n",
-    "    response = model.invoke(messages)\n",
+    "    response = bound_model.invoke(messages)\n",
     "    # We return a list, because this will get added to the existing list\n",
     "    return {\"messages\": response}\n",
     "\n",