diff --git a/playground/cris-tolbert/surprise-party/Invite-uischema.json b/playground/cris-tolbert/surprise-party/Invite-uischema.json
index 4fcdafc3..62f0cd27 100644
--- a/playground/cris-tolbert/surprise-party/Invite-uischema.json
+++ b/playground/cris-tolbert/surprise-party/Invite-uischema.json
@@ -1,5 +1,5 @@
 {
   "canattend": {
-    "ui:widget": "checkboxes"
+    "ui:widget": "radio"
   }
 }
\ No newline at end of file