diff --git a/library/CM/Maintenance/Cli.php b/library/CM/Maintenance/Cli.php
index b31b1090f..3d412bec3 100644
--- a/library/CM/Maintenance/Cli.php
+++ b/library/CM/Maintenance/Cli.php
@@ -47,7 +47,7 @@ protected function _registerCallbacks() {
                 CM_SVM_Model::deleteOldTrainings(3000);
             },
             'CM_Paging_Ip_Blocked::deleteOlder'         => function () {
-                CM_Paging_Ip_Blocked::deleteOlder(7 * 86400);
+                CM_Paging_Ip_Blocked::deleteOld();
             },
             'CM_Captcha::deleteOlder'                   => function () {
                 CM_Captcha::deleteOlder(3600);
diff --git a/library/CM/Paging/Ip/Blocked.php b/library/CM/Paging/Ip/Blocked.php
index 4e7dcc143..552a426d9 100644
--- a/library/CM/Paging/Ip/Blocked.php
+++ b/library/CM/Paging/Ip/Blocked.php
@@ -24,11 +24,14 @@ public function remove($ip) {
         CM_Db_Db::delete('cm_ipBlocked', array('ip' => $ip));
     }
 
+    public static function deleteOld() {
+        CM_Db_Db::delete('cm_ipBlocked', '`createStamp` < ' . (time() - self::_getMaxAge()));
+    }
+
     /**
-     * @param int $age
+     * @return int
      */
-    public static function deleteOlder($age) {
-        $age = (int) $age;
-        CM_Db_Db::delete('cm_ipBlocked', '`createStamp` < ' . (time() - $age));
+    protected static function _getMaxAge() {
+        return (int) self::_getConfig()->maxAge;
     }
 }
diff --git a/resources/config/default.php b/resources/config/default.php
index e8627d59f..8723779ff 100644
--- a/resources/config/default.php
+++ b/resources/config/default.php
@@ -31,6 +31,8 @@
         array('host' => 'localhost', 'port' => 11211),
     );
 
+    $config->CM_Paging_Ip_Blocked->maxAge = (7 * 86400);
+
     $config->classConfigCacheEnabled = true;
 
     $config->CM_Stream_Message->enabled = true;
@@ -105,11 +107,11 @@
         'class'     => 'CM_Db_Client',
         'arguments' => array(
             array(
-                'host'             => 'localhost',
-                'port'             => 3306,
-                'username'         => 'root',
-                'password'         => '',
-                'db'               => 'cm',
+                'host'     => 'localhost',
+                'port'     => 3306,
+                'username' => 'root',
+                'password' => '',
+                'db'       => 'cm',
             )
         )
     );
diff --git a/tests/library/CM/Paging/Ip/BlockedTest.php b/tests/library/CM/Paging/Ip/BlockedTest.php
index 283e6ac81..0ba4efc5b 100644
--- a/tests/library/CM/Paging/Ip/BlockedTest.php
+++ b/tests/library/CM/Paging/Ip/BlockedTest.php
@@ -3,8 +3,10 @@
 class CM_Paging_Ip_BlockedTest extends CMTest_TestCase {
 
     public function testAdd() {
+        CM_Config::get()->CM_Paging_Ip_Blocked->maxAge = (3 * 86400);
         $ip = '127.0.0.1';
         $ip2 = '127.0.0.2';
+
         $paging = new CM_Paging_Ip_Blocked();
         $paging->add(ip2long($ip));
         $this->assertEquals(1, $paging->getCount());
@@ -16,12 +18,12 @@ public function testAdd() {
         $paging->_change();
         $this->assertEquals(2, $paging->getCount());
         CMTest_TH::timeDaysForward(2);
-        CM_Paging_Ip_Blocked::deleteOlder(3 * 86400);
+        CM_Paging_Ip_Blocked::deleteOld();
         CM_Cache_Local::getInstance()->flush();
         $paging->_change();
         $this->assertEquals(1, $paging->getCount());
         CMTest_TH::timeDaysForward(2);
-        CM_Paging_Ip_Blocked::deleteOlder(3 * 86400);
+        CM_Paging_Ip_Blocked::deleteOld();
         CM_Cache_Local::getInstance()->flush();
         $this->assertEquals(1, $paging->getCount());
         $paging->_change();