diff --git a/lights.js b/lights.js
index c435425..a4c4caf 100644
--- a/lights.js
+++ b/lights.js
@@ -101,7 +101,8 @@ function tick_pattern() {
     for (let i = 0; i < cfg.leds; i++) {
       for (let command of pattern) {
         let name = command.command;
-        if (functions[name]) {
+        log.info(`${name} matches: ${functions[name]}`);
+        if (functions[name] != undefined) {
           if (functions[name].options && functions[name].options["convert_args"]) {
             let param_arg1 = parseInt(command.arg1) || targets[command.arg1];
             let param_arg2 = parseInt(command.arg2) || targets[command.arg2];