diff --git a/package/config/README.buildroot2 b/package/config/README.buildroot2
index 6569cab72e..4bf50ace9b 100644
--- a/package/config/README.buildroot2
+++ b/package/config/README.buildroot2
@@ -1,4 +1,5 @@
-This is a copy of the kconfig code in the kernel tweaked to suit Buildroot.
+This is a copy of the kconfig code in the kernel (currently 2.6.21.5) tweaked to
+suit Buildroot.
 
 To update:
 	cp -r /usr/src/linux/scripts/kconfig package/config.new