diff --git a/fastphp/func/common.php b/fastphp/func/common.php
index 80fbe07..6b457bc 100644
--- a/fastphp/func/common.php
+++ b/fastphp/func/common.php
@@ -207,7 +207,7 @@ function getIp()
         if (isset($_SERVER["HTTP_X_FORWARDED_FOR"]) && $_SERVER["HTTP_X_FORWARDED_FOR"] && strcasecmp($_SERVER["HTTP_X_FORWARDED_FOR"], "unknown")) {
             $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
         } else {
-            if ($_SERVER["REMOTE_ADDR"] && strcasecmp($_SERVER["REMOTE_ADDR"], "unknown")) {
+            if (isset($_SERVER["REMOTE_ADDR"]) && $_SERVER["REMOTE_ADDR"] && strcasecmp($_SERVER["REMOTE_ADDR"], "unknown")) {
                 $ip = $_SERVER["REMOTE_ADDR"];
             } else {
                 if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'],