diff --git a/tools/pi_control/worker.php b/tools/pi_control/worker.php
index c596aa9..19acde8 100644
--- a/tools/pi_control/worker.php
+++ b/tools/pi_control/worker.php
@@ -5,7 +5,14 @@ set_time_limit(0);
 
 $root = dirname(__DIR__, 2);
 chdir($root);
-require $root . '/config/fileload.php';
+$fileload = $root . '/config/fileload.php';
+if (!file_exists($fileload)) {
+    fwrite(STDERR, "[worker] Missing config: {$fileload}\n");
+    while (true) {
+        sleep(30);
+    }
+}
+require $fileload;
 
 $module = 'pi_control';
 $pdo = module_fn($module, 'pdo');