diff --git a/doc/api.md b/doc/api.md
index df559bc2..fd99d450 100644
--- a/doc/api.md
+++ b/doc/api.md
@@ -333,6 +333,8 @@ formatting functions and locale support.
 
 ::: vformat(string_view, format_args)
 
+::: operator""_a()
+
 ### Utilities
 
 ::: ptr(T)
@@ -358,12 +360,6 @@ functions.
 
 ::: format_system_error
 
-### Literal-Based API
-
-The following user-defined literals are defined in `fmt/format.h`.
-
-::: operator""_a()
-
 ### Custom Allocators
 
 The {fmt} library supports custom dynamic memory allocators. A custom