diff --git a/rc/bin/inst/authsetup b/rc/bin/inst/authsetup
index e4bea7dc3..b274969a3 100755
--- a/rc/bin/inst/authsetup
+++ b/rc/bin/inst/authsetup
@@ -4,9 +4,9 @@
 # prereq: systype copydist
 
 nvram=(/dev/sd*/nvram)
-nvram=nvram(1)
+nvram=$nvram(1)
 
-switch($1) {
+switch($1){
 case go
 	echo
 	echo 'Invalidate nvram'