diff --git a/rc.in b/rc.in
index aef540f..a1fca5a 100644
--- a/rc.in
+++ b/rc.in
@@ -129,10 +129,10 @@ rc.boot() {
 }
 
 rc.halt() {
-	if type -P halt; then
+	if type -P halt &>/dev/null; then
 		function rc.halt_poweroff { halt -p; }
 		function rc.halt_reboot { halt -r; }
-	elif [[ -f /proc/sysrq-trigger ]]; then
+	elif (( $(</proc/sys/kernel/sysrq) )); then
 		function rc.halt_poweroff { echo 'o' > /proc/sysrq-trigger; }
 		function rc.halt_reboot { echo 'b' > /proc/sysrq-trigger; }
 	else