diff --git a/doc/api.rst b/doc/api.rst
index 6f790f8f..1402f7c0 100644
--- a/doc/api.rst
+++ b/doc/api.rst
@@ -71,10 +71,12 @@ checked at compile time in C++20. To pass a runtime format string wrap it in
 Compile-Time Format String Checks
 ---------------------------------
 
-Compile-time checks are enabled by default on compilers that support C++20
-``consteval``. On older compilers you can use the
+Compile-time format string checks are enabled by default on compilers
+that support C++20 ``consteval``. On older compilers you can use the
 :ref:`FMT_STRING <legacy-checks>`: macro defined in ``fmt/format.h`` instead.
 
+Unused arguments are allowed as in Python's `str.format` and ordinary functions.
+
 .. doxygenclass:: fmt::basic_format_string
    :members: