diff --git a/admin/migration.php b/admin/migration.php
index 25bc733..9eceac0 100644
--- a/admin/migration.php
+++ b/admin/migration.php
@@ -22,6 +22,7 @@ use Framadate\Migration\From_0_8_to_0_9_Migration;
 use Framadate\Migration\AddColumn_receiveNewComments_For_0_9;
 use Framadate\Migration\AddColumn_uniqId_In_vote_For_0_9;
 use Framadate\Migration\AddColumn_hidden_In_poll_For_0_9;
+use Framadate\Migration\Alter_Comment_table_for_name_length;
 use Framadate\Migration\Migration;
 use Framadate\Utils;
 
@@ -36,6 +37,7 @@ $migrations = [
     new AddColumn_receiveNewComments_For_0_9(),
     new AddColumn_uniqId_In_vote_For_0_9(),
     new AddColumn_hidden_In_poll_For_0_9(),
+    new Alter_Comment_table_for_name_length(),
 ];
 // ---------------------------------------
 
diff --git a/app/classes/Framadate/Migration/Alter_Comment_table_for_name_length.php b/app/classes/Framadate/Migration/Alter_Comment_table_for_name_length.php
new file mode 100644
index 0000000..99e0adb
--- /dev/null
+++ b/app/classes/Framadate/Migration/Alter_Comment_table_for_name_length.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * This software is governed by the CeCILL-B license. If a copy of this license
+ * is not distributed with this file, you can obtain one at
+ * http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt
+ *
+ * Authors of STUdS (initial project): Guilhem BORGHESI (borghesi@unistra.fr) and Raphaël DROZ
+ * Authors of Framadate/OpenSondate: Framasoft (https://github.com/framasoft)
+ *
+ * =============================
+ *
+ * Ce logiciel est régi par la licence CeCILL-B. Si une copie de cette licence
+ * ne se trouve pas avec ce fichier vous pouvez l'obtenir sur
+ * http://www.cecill.info/licences/Licence_CeCILL-B_V1-fr.txt
+ *
+ * Auteurs de STUdS (projet initial) : Guilhem BORGHESI (borghesi@unistra.fr) et Raphaël DROZ
+ * Auteurs de Framadate/OpenSondage : Framasoft (https://github.com/framasoft)
+ */
+namespace Framadate\Migration;
+
+use Framadate\Utils;
+
+/**
+ * This migration alter the comment table to set a length to the name column.
+ *
+ * @package Framadate\Migration
+ * @version 1.0
+ */
+class Alter_Comment_table_for_name_length implements Migration {
+
+    function __construct() {
+    }
+
+    /**
+     * This method should describe in english what is the purpose of the migration class.
+     *
+     * @return string The description of the migration class
+     */
+    function description() {
+        return 'Alter the comment table to set a length to the name column.';
+    }
+
+    /**
+     * This method could check if the execute method should be called.
+     * It is called before the execute method.
+     *
+     * @param \PDO $pdo The connection to database
+     * @return bool true is the Migration should be executed.
+     */
+    function preCondition(\PDO $pdo) {
+        return true;
+    }
+
+    /**
+     * This methode is called only one time in the migration page.
+     *
+     * @param \PDO $pdo The connection to database
+     * @return bool true is the execution succeeded
+     */
+    function execute(\PDO $pdo) {
+        $this->alterCommentTable($pdo);
+
+        return true;
+    }
+
+    private function alterCommentTable(\PDO $pdo) {
+        $pdo->exec('
+        ALTER TABLE `' . Utils::table('comment') . '`
+        CHANGE `name` `name` VARCHAR( 64 ) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL ;');
+    }
+
+}