diff --git a/cookbook/RAPTOR.ipynb b/cookbook/RAPTOR.ipynb
index 906bb3911d..a10fd2df6b 100644
--- a/cookbook/RAPTOR.ipynb
+++ b/cookbook/RAPTOR.ipynb
@@ -535,9 +535,9 @@
     "    print(f\"--Generated {len(all_clusters)} clusters--\")\n",
     "\n",
     "    # Summarization\n",
-    "    template = \"\"\"Here is a sub-set of LangChain Expression Langauge doc. \n",
+    "    template = \"\"\"Here is a sub-set of LangChain Expression Language doc. \n",
     "    \n",
-    "    LangChain Expression Langauge provides a way to compose chain in LangChain.\n",
+    "    LangChain Expression Language provides a way to compose chain in LangChain.\n",
     "    \n",
     "    Give a detailed summary of the documentation provided.\n",
     "    \n",