diff --git a/docs/get_started/tour.mdx b/docs/get_started/tour.mdx
index c506cee5..99386805 100644
--- a/docs/get_started/tour.mdx
+++ b/docs/get_started/tour.mdx
@@ -411,7 +411,7 @@ We can either use the Restate UI playground or `curl`.
 <TabItem value="ts" label="TypeScript">
 For example, add a ticket `seat2B` to the cart of Mary by calling the `addTicket` handler of the `CartObject`.
 
-In the UI, click on the `CartObject` service, then on `Playground`, and invoke your handler from there with key `Mary` and body `"seat2B"`.
+In the UI, click on the `CartObject` service, then on `Playground`, and invoke your handler from there with key `Mary` and body `"seat2B"` (in quotes).
 
 Or via `curl`: