diff --git a/src/tools/serp-cluster.ts b/src/tools/serp-cluster.ts
index 4cde45fc..454250e9 100644
--- a/src/tools/serp-cluster.ts
+++ b/src/tools/serp-cluster.ts
@@ -9,7 +9,7 @@ function getPrompt(results: SearchSnippet[]): PromptPair {
     system: `
 You are a search engine result analyzer. You look at the SERP API response and group them into meaningful cluster. 
 
-Each cluster should contain a summary of the content, key data and insights, the corresponding URLs and search advice. Respond in JSON format.
+Each cluster should contain a summary of the content, key data and insights, the corresponding URLs and search advice.
 `,
     user:
       `