diff --git a/playground/rmgi/demo/3p-form3-uischema.json b/playground/rmgi/demo/3p-form3-uischema.json
index 33837dac..375153c5 100644
--- a/playground/rmgi/demo/3p-form3-uischema.json
+++ b/playground/rmgi/demo/3p-form3-uischema.json
@@ -1 +1 @@
-{"name":{"ui:options": }}
\ No newline at end of file
+{"name":{"ui:options":{}}}
\ No newline at end of file