diff --git a/playground/rmgi/demo/3p-form1-uischema.json b/playground/rmgi/demo/3p-form1-uischema.json
index 3671a3a1..11ad077d 100644
--- a/playground/rmgi/demo/3p-form1-uischema.json
+++ b/playground/rmgi/demo/3p-form1-uischema.json
@@ -4,5 +4,5 @@
     "ui:emptyValue": "",
     "ui:placeholder": "ui:emptyValue causes this field to always be valid despite being required",
     "ui:autocomplete": "family-name",
-    "ui:enableMarkdownInDescription": true,  }
+    "ui:enableMarkdownInDescription": true  }
 }
\ No newline at end of file