diff --git a/UPDATING b/UPDATING
index 6d1988e99040..0d20173c61eb 100644
--- a/UPDATING
+++ b/UPDATING
@@ -31,6 +31,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20150210:
+	The autofs(4) ABI was changed in order to restore binary compatibility
+	with 10.1-RELEASE.  The automountd(8) daemon needs to be rebuilt to work
+	with the new kernel.
+
 20150131:
 	The powerpc64 kernel has been changed to a position-independent
 	executable. This can only be booted with a new version of loader(8),