diff --git a/gemini/prompts/prompt_optimizer/get_started_with_vertex_ai_prompt_optimizer_sdk.ipynb b/gemini/prompts/prompt_optimizer/get_started_with_vertex_ai_prompt_optimizer_sdk.ipynb
index fc29fd6974..9d55e369fe 100644
--- a/gemini/prompts/prompt_optimizer/get_started_with_vertex_ai_prompt_optimizer_sdk.ipynb
+++ b/gemini/prompts/prompt_optimizer/get_started_with_vertex_ai_prompt_optimizer_sdk.ipynb
@@ -91,7 +91,7 @@
     "\n",
     "- Prepare the prompt-ground truth pairs optimized for another model\n",
     "- Define the prompt template you want to optimize\n",
-    "- Set target model and evalution metric\n",
+    "- Set target model and evaluation metric\n",
     "- Set optimization mode and steps\n",
     "- Run the automatic prompt optimization job\n",
     "- Collect the best prompt template and eval metric\n",