diff --git a/sys/boot/common/loader.8 b/sys/boot/common/loader.8
index d7d7568e6a81..5ba740c29899 100644
--- a/sys/boot/common/loader.8
+++ b/sys/boot/common/loader.8
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 8, 2007
+.Dd November 8, 2007
 .Dt LOADER 8
 .Os
 .Sh NAME
@@ -591,7 +591,8 @@ Modifies kernel option
 .It Va kern.maxbcache
 Limits the amount of KVM reserved for use by the
 buffer cache, specified in bytes.
-The default maximum is 200MB.
+The default maximum is 200MB on i386,
+and 400MB on amd64, sparc64, and sun4v.
 This parameter is used to
 prevent the buffer cache from eating too much
 KVM in large-memory machine configurations.