diff --git a/worker/stacktach.sh b/worker/stacktach.sh
index 81ba142..3c51921 100755
--- a/worker/stacktach.sh
+++ b/worker/stacktach.sh
@@ -33,7 +33,7 @@ case "$1" in
     /sbin/start-stop-daemon --start --pidfile $PIDFILE --make-pidfile -b --exec $DAEMON $ARGS
     ;;
   status)
-    status_of_proc -p "{PIDFILE}" "$DAEMON" "stacktach" && exit 0 || exit $?
+    status_of_proc -p "${PIDFILE}" "$DAEMON" "stacktach" && exit 0 || exit $?
     ;;
   *)
     echo "Usage: stacktach.sh {start|stop|restart|status}"