diff --git a/src/chatbox.tsx b/src/chatbox.tsx
index 3a4912d..5aa2381 100644
--- a/src/chatbox.tsx
+++ b/src/chatbox.tsx
@@ -455,6 +455,7 @@ export default function ChatBOX(props: {
                 className="mx-2 underline cursor-pointer"
                 onClick={() => {
                   chatStore.systemMessageContent = "";
+                  chatStore.toolsString = "";
                   chatStore.history = [];
                   setChatStore({ ...chatStore });
                 }}