diff --git a/pkg/+PRE_DEINSTALL b/pkg/+PRE_DEINSTALL
index b0d86ac80..b1a0cf2ad 100644
--- a/pkg/+PRE_DEINSTALL
+++ b/pkg/+PRE_DEINSTALL
@@ -8,8 +8,7 @@ rm -f /etc/shells.bak
 
 echo "Unhooking from /etc/rc"
 cp /etc/rc /etc/rc.bak
-LINES=\$(cat /etc/rc | wc -l)
-tail -n \$(expr \${LINES} - 4) /etc/rc.bak > /etc/rc
+tail -n +5 /etc/rc.bak > /etc/rc
 rm -f /etc/rc.bak
 
 echo "Enabling FreeBSD mirror"