diff --git a/apps/advanced/requirements.php b/apps/advanced/requirements.php
index a26e4bbad5..bc4018f259 100644
--- a/apps/advanced/requirements.php
+++ b/apps/advanced/requirements.php
@@ -69,14 +69,6 @@ $requirements = array(
         'condition' => extension_loaded('apc'),
         'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-caching-apccache.html">ApcCache</a>',
     ),
-    // Additional PHP extensions :
-    array(
-        'name' => 'Mcrypt extension',
-        'mandatory' => false,
-        'condition' => extension_loaded('mcrypt'),
-        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-helpers-security.html">Security Helper</a>',
-        'memo' => 'Required by encrypt and decrypt methods.'
-    ),
     // PHP ini :
     'phpSafeMode' => array(
         'name' => 'PHP safe mode',
diff --git a/apps/basic/requirements.php b/apps/basic/requirements.php
index db53ef4e4e..a38b9363f0 100644
--- a/apps/basic/requirements.php
+++ b/apps/basic/requirements.php
@@ -69,14 +69,6 @@ $requirements = array(
         'condition' => extension_loaded('apc'),
         'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-caching-apccache.html">ApcCache</a>',
     ),
-    // Additional PHP extensions :
-    array(
-        'name' => 'Mcrypt extension',
-        'mandatory' => false,
-        'condition' => extension_loaded('mcrypt'),
-        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-helpers-security.html">Security Helper</a>',
-        'memo' => 'Required by encrypt and decrypt methods.'
-    ),
     // PHP ini :
     'phpSafeMode' => array(
         'name' => 'PHP safe mode',
diff --git a/framework/requirements/requirements.php b/framework/requirements/requirements.php
index 53cf0ab532..f85bbdda69 100644
--- a/framework/requirements/requirements.php
+++ b/framework/requirements/requirements.php
@@ -38,6 +38,13 @@ return array(
         'by' => '<a href="http://www.php.net/manual/en/book.mbstring.php">Multibyte string</a> processing',
         'memo' => 'Required for multibyte encoding string processing.'
     ),
+    array(
+        'name' => 'Mcrypt extension',
+        'mandatory' => false,
+        'condition' => extension_loaded('mcrypt'),
+        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-helpers-security.html">Security Helper</a>',
+        'memo' => 'Required by encrypt and decrypt methods.'
+    ),
     array(
         'name' => 'Intl extension',
         'mandatory' => false,