diff --git a/release/Makefile.mirrors b/release/Makefile.mirrors
index 7f0fcec09479..84e4672de3df 100644
--- a/release/Makefile.mirrors
+++ b/release/Makefile.mirrors
@@ -5,6 +5,10 @@
 # You probably do not want to use this.  Really.
 # You have been warned.
 #
+# Seriously.
+#
+# Don't use this unless you know why you're using it.
+#
 # $FreeBSD$
 #