diff --git a/radius.php b/radius.php
index 34abc380..792ab2f1 100644
--- a/radius.php
+++ b/radius.php
@@ -207,8 +207,10 @@ try {
             if (!$tur) {
                 // if check if pppoe_username
                 $c = ORM::for_table('tbl_customers')->select('username')->select('pppoe_password')->whereRaw("BINARY pppoe_username = '$username'")->find_one();
-                $username = $c['username'];
-                $tur = ORM::for_table('tbl_user_recharges')->whereRaw("BINARY username = '$username'")->find_one();
+                if($c){
+                    $username = $c['username'];
+                    $tur = ORM::for_table('tbl_user_recharges')->whereRaw("BINARY username = '$username'")->find_one();
+                }
             }
             if ($tur) {
                 if (!$isVoucher && !$isCHAP) {