diff --git a/doc/functions.xml b/doc/functions.xml
index c4cbf0adb203..8223a8b0531c 100644
--- a/doc/functions.xml
+++ b/doc/functions.xml
@@ -808,12 +808,6 @@ pkgs.dockerTools.buildLayeredImage {
      closure of the final image.
     </para>
 
-    <para>
-     This is different from <function>pkgs.dockerTools.buildImage</function>
-     which does <emphasis>not</emphasis> automatically include the
-     configuration's closure.
-    </para>
-
     <para>
      This allows you to make very simple Docker images with very little code.
      This container will start up and run <command>hello</command>: