diff --git a/logger.php b/logger.php
index 5af2ea9..7c80e97 100644
--- a/logger.php
+++ b/logger.php
@@ -131,6 +131,8 @@ class logger
     $backtrace = debug_backtrace();
     for ($i = 0 ; $i <= $this->backTraceSkip ; $i++)
       $back = array_shift ($backtrace);
+    while (! array_key_exists ("file", $back) && count ($backtrace) > 0)
+      $back = array_shift ($backtrace);
     $msg = "";
     if (isset ($_SERVER["HTTP_X_FORWARDED_FOR"]))
       $msg .= "[".$_SERVER["HTTP_X_FORWARDED_FOR"]."] ";