diff --git a/README.md b/README.md
index a2d99f6..b51b29f 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,18 @@ When set, this will calculate the [Factual Consistency Score (FCS)](https://docs
 
 Define the [summarizer and prompt](https://docs.vectara.com/docs/learn/grounded-generation/select-a-summarizer) to use to generate the chat response.
 
+##### `numberOfSearchResults` (optional)
+
+Define the number of search results to be used to generate summary. Default is set to 15.
+
+##### `rerankerId` (optional)
+
+Define the reranker Id to be used , Defaults to 272725718.
+
+##### `lambda` (optional)
+
+How much to weigh lexical scores compared to the embedding score. 0 means lexical search is not used at all, and 1 means only lexical search is used.
+
 ### Use your own views with the useChat hook
 
 Install React-Chatbot:
diff --git a/src/components/ChatView.tsx b/src/components/ChatView.tsx
index e851a9c..02bd1f4 100644
--- a/src/components/ChatView.tsx
+++ b/src/components/ChatView.tsx
@@ -60,6 +60,8 @@ export interface Props {
   // Define the reranker Id to be used , Defaults to "272725718"
   rerankerId?: RerankerId;
 
+  // How much to weigh lexical scores compared to the embedding score. 0 means lexical search is not used at all,
+  // and 1 means only lexical search is used.
   lambda?: number;
 
   // Enables streaming responses from the API. Defaults to true.
diff --git a/src/useChat.ts b/src/useChat.ts
index 3774ff5..f0a31c8 100644
--- a/src/useChat.ts
+++ b/src/useChat.ts
@@ -235,7 +235,7 @@ export const useChat = ({
 
           }
         })
-        
+
         resultsWithSnippets = response.search_results.map((result: SearchResult) => {
           const { pre, text, post } = parseSnippet(result.text);