diff --git a/docs/docs/modules/chains/foundational/router.ipynb b/docs/docs/modules/chains/foundational/router.ipynb
index 2228a9f2d574e..019cee056d24d 100644
--- a/docs/docs/modules/chains/foundational/router.ipynb
+++ b/docs/docs/modules/chains/foundational/router.ipynb
@@ -98,7 +98,7 @@
     "    \"Classify the topic of the user question\"\n",
     "\n",
     "    topic: Literal[\"math\", \"physics\", \"general\"]\n",
-    "    \"The topic of the user question. One of 'math', 'phsyics' or 'general'.\"\n",
+    "    \"The topic of the user question. One of 'math', 'physics' or 'general'.\"\n",
     "\n",
     "\n",
     "classifier_function = convert_pydantic_to_openai_function(TopicClassifier)\n",