diff --git a/etc/root/dot.cshrc b/etc/root/dot.cshrc
index 11b4614e6188..ceb2ee4a4edc 100644
--- a/etc/root/dot.cshrc
+++ b/etc/root/dot.cshrc
@@ -32,3 +32,4 @@ alias	tset	'set noglob histchars=""; eval `\tset -s \!*`; unset noglob histchars
 if ($?prompt) then
 	set prompt="`hostname -s`# "
 endif
+setenv BLOCKSIZE K