diff --git a/rowbot b/rowbot
index d71948d..9ddbf42 100755
--- a/rowbot
+++ b/rowbot
@@ -509,7 +509,7 @@ on_sys_after_999_annoyatron900() {
 on_sys_register_999_annoyatron900() {
   while true; do
     read -rt 10 </dev/zero
-    KILL -USR1 "$$"
+    kill -USR1 "$$"
   done &
 
   alarm_pid=$!