diff --git a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
index ee5d7ba8d4..337cfa3ed5 100644
--- a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
+++ b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
@@ -1072,6 +1072,11 @@ overview of their function and contents.
       environment variable. The value is a colon-separated list of
       directories that are searched left-to-right in order.
 
+   :term:`FILE_LAYERNAME`
+      During parsing and task execution, this is set to the name of the
+      layer containing the recipe file. Code can use this to identify which
+      layer a recipe is from.
+
    :term:`GITDIR`
       The directory in which a local copy of a Git repository is stored
       when it is cloned.