diff --git a/src/sphinx/formats/docker.rst b/src/sphinx/formats/docker.rst
index 90df6b9ad..e2175f5e2 100644
--- a/src/sphinx/formats/docker.rst
+++ b/src/sphinx/formats/docker.rst
@@ -145,13 +145,13 @@ Environment Settings
   ``dockerApiVersion``
     The docker server API version. Used to leverage new docker features while maintaining backwards compatibility.
 
-  ``dockerLayerGrouping``
+  ``dockerGroupLayers``
     The function mapping files into separate layers to increase docker cache hits.
     Lower index means the file would be a part of an earlier layer.
     The main idea behind this is to COPY dependencies *.jar's first as they should change rarely.
     In separate command COPY the application *.jar's that should change more often.
     Defaults to detect whether the file name starts with ``ThisBuild / organization``.
-    To disable layers map all files to no layer using ``dockerLayerGrouping in Docker  := (_ => None)``.
+    To disable layers map all files to no layer using ``dockerGroupLayers in Docker := PartialFunction.empty``.
 
 Publishing Settings
 ~~~~~~~~~~~~~~~~~~~