diff --git a/README b/README
index 77b42c6..bab27f0 100644
--- a/README
+++ b/README
@@ -33,6 +33,16 @@ To fetch all packages without building anything:
 
   mk fetch-world
 
+Rebuilding the kernel
+---------------------
+
+There is a default config for the kernel in stuff/kernel-config-$arch.
+The  default  config is  copied  over  .config  in the  kernel  source
+directory every  time you do a  build via mk(1).  You  can adjust your
+local .config  and copy it  over stuff/kernel-config-$arch or  you can
+just manually  compile the kernel  and copy System.map and  bzImage to
+$root/boot.
+
 Installing
 ----------