diff --git a/_admin.php b/_admin.php
index 7903e36..cd79b56 100644
--- a/_admin.php
+++ b/_admin.php
@@ -30,13 +30,13 @@ dcCore::app()->addBehavior('exportSingleV2', function ($exp, $blog_id) {
     $exp->export(
         'alias',
         'SELECT alias_url, alias_destination, alias_position ' .
-        'FROM ' . dcCore::app()->prefix . 'alias A ' .
+        'FROM ' . dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME . ' A ' .
         "WHERE A.blog_id = '" . $blog_id . "'"
     );
 });
 
 dcCore::app()->addBehavior('importInitV2', function ($bk) {
-    $bk->cur_alias = dcCore::app()->con->openCursor(dcCore::app()->prefix . 'alias');
+    $bk->cur_alias = dcCore::app()->con->openCursor(dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME);
     $bk->alias     = new dcAliases();
     $bk->aliases   = $bk->alias->getAliases();
 });
diff --git a/_init.php b/_init.php
new file mode 100644
index 0000000..976a213
--- /dev/null
+++ b/_init.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * @brief alias, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Olivier Meunier and contributors
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+if (!defined('DC_RC_PATH')) {
+    return null;
+}
+
+class initAlias
+{
+    public const ALIAS_TABLE_NAME = 'alias';
+}
diff --git a/_install.php b/_install.php
index c2ce467..1d986c8 100644
--- a/_install.php
+++ b/_install.php
@@ -23,7 +23,7 @@ if (version_compare(dcCore::app()->getVersion('alias'), $version, '>=')) {
 try {
     $s = new dbStruct(dcCore::app()->con, dcCore::app()->prefix);
 
-    $s->alias
+    $s->{initAlias::ALIAS_TABLE_NAME}
         ->blog_id('varchar', 32, false)
         ->alias_url('varchar', 255, false)
         ->alias_destination('varchar', 255, false)
diff --git a/inc/class.dc.aliases.php b/inc/class.dc.aliases.php
index a5b6dcc..6e56eb6 100644
--- a/inc/class.dc.aliases.php
+++ b/inc/class.dc.aliases.php
@@ -16,8 +16,6 @@ if (!defined('DC_RC_PATH')) {
 
 class dcAliases
 {
-    public const ALIAS_TABLE_NAME = 'alias';
-
     protected $aliases;
 
     public function __construct()
@@ -32,7 +30,7 @@ class dcAliases
 
         $this->aliases = [];
         $sql           = 'SELECT alias_url, alias_destination, alias_position ' .
-                'FROM ' . dcCore::app()->prefix . dcAliases::ALIAS_TABLE_NAME . ' ' .
+                'FROM ' . dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME . ' ' .
                 "WHERE blog_id = '" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' " .
                 'ORDER BY alias_position ASC ';
         $this->aliases = dcCore::app()->con->select($sql)->rows();
@@ -77,7 +75,7 @@ class dcAliases
             throw new Exception(__('Alias destination is empty.'));
         }
 
-        $cur                    = dcCore::app()->con->openCursor(dcCore::app()->prefix . dcAliases::ALIAS_TABLE_NAME);
+        $cur                    = dcCore::app()->con->openCursor(dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME);
         $cur->blog_id           = (string) dcCore::app()->blog->id;
         $cur->alias_url         = (string) $url;
         $cur->alias_destination = (string) $destination;
@@ -88,7 +86,7 @@ class dcAliases
     public function deleteAlias($url)
     {
         dcCore::app()->con->execute(
-            'DELETE FROM ' . dcCore::app()->prefix . dcAliases::ALIAS_TABLE_NAME . ' ' .
+            'DELETE FROM ' . dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME . ' ' .
             "WHERE blog_id = '" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' " .
             "AND alias_url = '" . dcCore::app()->con->escape($url) . "' "
         );
@@ -97,7 +95,7 @@ class dcAliases
     public function deleteAliases()
     {
         dcCore::app()->con->execute(
-            'DELETE FROM ' . dcCore::app()->prefix . dcAliases::ALIAS_TABLE_NAME . ' ' .
+            'DELETE FROM ' . dcCore::app()->prefix . initAlias::ALIAS_TABLE_NAME . ' ' .
             "WHERE blog_id = '" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' "
         );
     }