diff --git a/notebook/agentchat_agentoptimizer.ipynb b/notebook/agentchat_agentoptimizer.ipynb
index 7790d0ff57..8e33f79f07 100644
--- a/notebook/agentchat_agentoptimizer.ipynb
+++ b/notebook/agentchat_agentoptimizer.ipynb
@@ -21,7 +21,7 @@
     "More information could be found in the [paper](https://arxiv.org/abs/2402.11359).\n",
     "\n",
     "Authors:\n",
-    "- [Shaokun Zhang](https://github.com/skzhang1), Ph.D. student at the The Pennsylvania State University\n",
+    "- [Shaokun Zhang](https://github.com/skzhang1), Ph.D. student at the Pennsylvania State University\n",
     "- [Jieyu Zhang](https://jieyuz2.github.io), Ph.D. student at the University of Washington"
    ]
   },
diff --git a/test/agentchat/test_function_call_groupchat.py b/test/agentchat/test_function_call_groupchat.py
index 653fe1ff18..c18675735e 100755
--- a/test/agentchat/test_function_call_groupchat.py
+++ b/test/agentchat/test_function_call_groupchat.py
@@ -66,7 +66,7 @@ def get_random_number(self):
     )
     observer = autogen.AssistantAgent(
         name="Observer",
-        system_message="You observe the the player's actions and results. Summarize in 1 sentence.",
+        system_message="You observe the player's actions and results. Summarize in 1 sentence.",
         description="An observer.",
         llm_config=llm_config_no_function,
     )