diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index b4c6bc957..f8765e084 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -1530,6 +1530,11 @@ system and gives an overview of their function and contents.
       :term:`CCACHE_DISABLE` variable can be set to "1" in a recipe to disable
       `Ccache` support. This is useful when the recipe is known to not support it.
 
+   :term:`CCACHE_NATIVE_RECIPES_ALLOWED`
+      The :term:`CCACHE_NATIVE_RECIPES_ALLOWED` variable can be set in a
+      :term:`configuration file` to a list of native recipes that are allowed to
+      be optimized with the :ref:`ref-classes-ccache` class.
+
    :term:`CCACHE_TOP_DIR`
       When inheriting the :ref:`ref-classes-ccache` class, the
       :term:`CCACHE_TOP_DIR` variable can be set to the location of where