diff --git a/docs/custom_ui.mdx b/docs/custom_ui.mdx
index 007cbdb..addbefb 100644
--- a/docs/custom_ui.mdx
+++ b/docs/custom_ui.mdx
@@ -226,7 +226,7 @@ The button control is a clickable that sends a numeric value.
 }
 ```
 
-The `options` element defines value to be sent, e.g. `"options": [10],`. The value data is one byte (i.e. <=255).
+The `options` element defines a value to be sent, e.g. `"options": [10],`. The value data is one byte (i.e. <=255).
 
 ### Toggle Control