diff --git a/docs/ref/forms/widgets.txt b/docs/ref/forms/widgets.txt
index 5bd0a0b5ea..d0dc17a2bc 100644
--- a/docs/ref/forms/widgets.txt
+++ b/docs/ref/forms/widgets.txt
@@ -520,7 +520,7 @@ Selector and checkbox widgets
 
     .. attribute:: CheckboxInput.check_test
 
-        A callable that takes the value of the CheckBoxInput and returns
+        A callable that takes the value of the ``CheckboxInput`` and returns
         ``True`` if the checkbox should be checked for that value.
 
 ``Select``