diff --git a/logger.php b/logger.php
index 489cb33..bcf1a5b 100644
--- a/logger.php
+++ b/logger.php
@@ -67,10 +67,10 @@ class logger
     for ($i = 0 ; $i <= $this->backTraceSkip ; $i++)
       $back = array_shift ($backtrace);
     $msg = "";
-    if (isset ($_SERVER["REMOTE_ADDR"]))
-    {
+    if (isset ($_SERVER["HTTP_X_FORWARDED_FOR"]))
+      $msg .= "[".$_SERVER["HTTP_X_FORWARDED_FOR"]."] ";
+    elseif (isset ($_SERVER["REMOTE_ADDR"]))
       $msg .= "[".$_SERVER["REMOTE_ADDR"]."] ";
-    }
 
     // The messages are all the parameters of the function except the first,
     // which is the priority