diff --git a/reference/forms/types/number.rst b/reference/forms/types/number.rst
index de5ae737aba..1dbe6cf29eb 100644
--- a/reference/forms/types/number.rst
+++ b/reference/forms/types/number.rst
@@ -46,7 +46,7 @@ Field Options
 rounding_mode
 ~~~~~~~~~~~~~
 
-**type**: ``integer`` **default**: ``NumberToLocalizedStringTransformer::ROUND_HALFUP``
+**type**: ``integer`` **default**: ``NumberToLocalizedStringTransformer::ROUND_HALF_UP``
 
 If a submitted number needs to be rounded (based on the `scale`_
 option), you have several configurable options for that rounding. Each