diff --git a/templates/Webhook.j2.php b/templates/Webhook.j2.php
index 7427cd1..dc45109 100644
--- a/templates/Webhook.j2.php
+++ b/templates/Webhook.j2.php
@@ -1,15 +1,27 @@
 <?php
 
+function _syslog($msg) {
+    $trace = debug_backtrace();
+    $caller = $trace[1];
+    $parent = $caller['function'];
+    if (isset($caller['class']))
+        $parent = $caller['class'] . '::' . $parent;
+
+    return error_log( "{$parent}: {$msg}" );
+}
+
 $raw = file_get_contents("php://input");
 try {
   $payload = json_decode($raw, TRUE);
 } catch (Exception $e) {
     header('HTTP/1.1 422 Unprocessable Entity');
+    _syslog('[webhook] json_decode failed on:' . $raw);
     die('Unprocessable Entity');
 }
 
 if(! isset($payload['secret']) || $payload['secret'] != '{{ callback_secret }}' ) {
     header('HTTP/1.1 400 Bad Request');
+    _syslog('[webhook] bad request:' . $raw);
     die('Bad Request');
 }