diff --git a/admin/modules/system/backup.php b/admin/modules/system/backup.php
index 9f5aafe..e38af70 100755
--- a/admin/modules/system/backup.php
+++ b/admin/modules/system/backup.php
@@ -23,13 +23,11 @@
 
 // key to authenticate
 define('INDEX_AUTH', '1');
-// key to get full database access
-define('DB_ACCESS', 'fa');
 
 // main system configuration
 require '../../../sysconfig.inc.php';
 // IP based access limitation
-require LIB_DIR.'ip_based_access.inc.php';
+require_once LIB_DIR.'ip_based_access.inc.php';
 do_checkIP('smc');
 do_checkIP('smc-system');
 // start the session
diff --git a/lib/ip_based_access.inc.php b/lib/ip_based_access.inc.php
index a47b13b..76401bb 100644
--- a/lib/ip_based_access.inc.php
+++ b/lib/ip_based_access.inc.php
@@ -25,33 +25,34 @@
     die("can not access this file directly");
 }
 
-function do_checkIP ($module = 'general') 
-{
-    global $sysconf;
-    if (isset($sysconf['ipaccess'][''.$module.''])) {
-        $accmod = $sysconf['ipaccess'][''.$module.''];
-    } else {
-        die ('Invalid access module');
-    }
-    #$accmod = $sysconf['ipaccess'][''.$module.''];
-    $is_allowed = false;
-    $remote_addr = $_SERVER['REMOTE_ADDR'];
-    if (($accmod != 'all') AND (is_array($accmod))) {
-        foreach ($accmod as $value) {
-            $pattern = "/^".$value."/i";
-            if (preg_match($pattern, $remote_addr)) {
-                $is_allowed = true;
-            }
+if (!function_exists('do_checkIP')) {
+    function do_checkIP ($module = 'general') 
+    {
+        global $sysconf;
+        if (isset($sysconf['ipaccess'][''.$module.''])) {
+            $accmod = $sysconf['ipaccess'][''.$module.''];
+        } else {
+            die ('Invalid access module');
         }
-    } elseif ($accmod == 'all') {
-        $is_allowed = true;
-    } else {
+        #$accmod = $sysconf['ipaccess'][''.$module.''];
         $is_allowed = false;
-    }
-    
-    if (!$is_allowed) {
-        echo 'Stop here! Access now allowed.';
-        exit();
+        $remote_addr = $_SERVER['REMOTE_ADDR'];
+        if (($accmod != 'all') AND (is_array($accmod))) {
+            foreach ($accmod as $value) {
+                $pattern = "/^".$value."/i";
+                if (preg_match($pattern, $remote_addr)) {
+                    $is_allowed = true;
+                }
+            }
+        } elseif ($accmod == 'all') {
+            $is_allowed = true;
+        } else {
+            $is_allowed = false;
+        }    
+        if (!$is_allowed) {
+            echo 'Stop here! Access now allowed.';
+            exit();
+        }
     }
 }