diff --git a/_init.php b/_init.php
new file mode 100644
index 0000000..36e9d4d
--- /dev/null
+++ b/_init.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * @brief cinecturlink2, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis 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 initCinecturlink2
+{
+    public const CINECTURLINK_TABLE_NAME = 'cinecturlink2';
+    public const CATEGORY_TABLE_NAME = 'cinecturlink2_cat';
+}
diff --git a/_install.php b/_install.php
index 00f4482..34cf31c 100644
--- a/_install.php
+++ b/_install.php
@@ -23,7 +23,7 @@ if (version_compare($old_version, $new_version, '>=')) {
 
 try {
     $s = new dbStruct(dcCore::app()->con, dcCore::app()->prefix);
-    $s->cinecturlink2
+    $s->{initCinecturlink2::CINECTURLINK_TABLE_NAME}
         ->link_id('bigint', 0, false)
         ->blog_id('varchar', 32, false)
         ->cat_id('bigint', 0, true)
@@ -49,7 +49,7 @@ try {
         ->index('idx_cinecturlink2_user_id', 'btree', 'user_id')
         ->index('idx_cinecturlink2_type', 'btree', 'link_type');
 
-    $s->cinecturlink2_cat
+    $s->{initCinecturlink2::CATEGORY_TABLE_NAME}
         ->cat_id('bigint', 0, false)
         ->blog_id('varchar', 32, false)
         ->cat_title('varchar', 255, false)
diff --git a/_uninstall.php b/_uninstall.php
index 7cde231..2b47b2e 100644
--- a/_uninstall.php
+++ b/_uninstall.php
@@ -31,7 +31,7 @@ $this->addUserAction(
     /* action */
     'delete',
     /* ns */
-    'cinecturlink2',
+    initCinecturlink2::CINECTURLINK_TABLE_NAME,
     /* desc */
     sprintf(__('delete %s table'), 'cinecturlink2')
 );
@@ -42,7 +42,7 @@ $this->addUserAction(
     /* action */
     'delete',
     /* ns */
-    'cinecturlink2_cat',
+    initCinecturlink2::CATEGORY_TABLE_NAME,
     /* desc */
     sprintf(__('delete %s table'), 'cinecturlink2_cat')
 );
@@ -86,7 +86,7 @@ $this->addDirectAction(
     /* action */
     'delete',
     /* ns */
-    'cinecturlink2',
+    initCinecturlink2::CINECTURLINK_TABLE_NAME,
     /* desc */
     sprintf(__('delete %s table'), 'cinecturlink2')
 );
@@ -97,7 +97,7 @@ $this->addDirectAction(
     /* action */
     'delete',
     /* ns */
-    'cinecturlink2_cat',
+    initCinecturlink2::CATEGORY_TABLE_NAME,
     /* desc */
     sprintf(__('delete %s table'), 'cinecturlink2_cat')
 );
diff --git a/inc/class.cinecturlink2.php b/inc/class.cinecturlink2.php
index 007ec41..35dc984 100644
--- a/inc/class.cinecturlink2.php
+++ b/inc/class.cinecturlink2.php
@@ -25,6 +25,8 @@ class cinecturlink2
     public $con;
     /** @var string Cinecturlink table name */
     public $table;
+    /** @var string Cinecturlink category table name */
+    public $cat_table;
     /** @var string Blog ID */
     public $blog;
 
@@ -36,7 +38,8 @@ class cinecturlink2
         dcCore::app()->blog->settings->addNamespace('cinecturlink2');
 
         $this->con   = dcCore::app()->con;
-        $this->table = dcCore::app()->prefix . 'cinecturlink2';
+        $this->table = dcCore::app()->prefix . initCinecturlink2::CINECTURLINK_TABLE_NAME;
+        $this->cat_table = dcCore::app()->prefix . initCinecturlink2::CATEGORY_TABLE_NAME;
         $this->blog  = dcCore::app()->con->escape(dcCore::app()->blog->id);
     }
 
@@ -68,8 +71,8 @@ class cinecturlink2
         }
 
         $strReq .= 'FROM ' . $this->table . ' L ' .
-        'INNER JOIN ' . dcCore::app()->prefix . 'user U ON U.user_id = L.user_id ' .
-        'LEFT OUTER JOIN ' . $this->table . '_cat C ON L.cat_id = C.cat_id ';
+        'INNER JOIN ' . dcCore::app()->prefix . dcAuth::USER_TABLE_NAME . ' U ON U.user_id = L.user_id ' .
+        'LEFT OUTER JOIN ' . $this->cat_table . ' C ON L.cat_id = C.cat_id ';
 
         if (!empty($params['from'])) {
             $strReq .= $params['from'] . ' ';
@@ -278,7 +281,7 @@ class cinecturlink2
             'C.cat_pos, C.cat_creadt, C.cat_upddt ';
         }
 
-        $strReq .= 'FROM ' . $this->table . '_cat C  ';
+        $strReq .= 'FROM ' . $this->cat_table . ' C  ';
 
         if (!empty($params['from'])) {
             $strReq .= $params['from'] . ' ';
@@ -343,7 +346,7 @@ class cinecturlink2
      */
     public function addCategory(cursor $cur)
     {
-        $this->con->writeLock($this->table . '_cat');
+        $this->con->writeLock($this->cat_table);
 
         try {
             if ($cur->cat_title == '') {
@@ -404,7 +407,7 @@ class cinecturlink2
         }
 
         $this->con->execute(
-            'DELETE FROM ' . $this->table . '_cat ' .
+            'DELETE FROM ' . $this->cat_table . ' ' .
             'WHERE cat_id = ' . $id . ' ' .
             "AND blog_id = '" . $this->blog . "' "
         );
@@ -426,7 +429,7 @@ class cinecturlink2
     private function getNextCatId()
     {
         return $this->con->select(
-            'SELECT MAX(cat_id) FROM ' . $this->table . '_cat '
+            'SELECT MAX(cat_id) FROM ' . $this->cat_table . ' '
         )->f(0) + 1;
     }
 
@@ -438,7 +441,7 @@ class cinecturlink2
     private function getNextCatPos()
     {
         return $this->con->select(
-            'SELECT MAX(cat_pos) FROM ' . $this->table . '_cat ' .
+            'SELECT MAX(cat_pos) FROM ' . $this->cat_table . ' ' .
             "WHERE blog_id = '" . $this->blog . "' "
         )->f(0) + 1;
     }
diff --git a/index.php b/index.php
index bf49e77..21fe5bf 100644
--- a/index.php
+++ b/index.php
@@ -315,7 +315,7 @@ if ($part == 'cats') {
             $i = 0;
             foreach ($catorder as $id) {
                 $i++;
-                $cur          = dcCore::app()->con->openCursor($C2->table . '_cat');
+                $cur          = dcCore::app()->con->openCursor($C2->cat_table);
                 $cur->cat_pos = $i;
                 $C2->updCategory($id, $cur);
             }
@@ -356,7 +356,7 @@ if ($part == 'cat') {
             if ($exists) {
                 throw new Exception(__('Category with same name already exists.'));
             }
-            $cur            = dcCore::app()->con->openCursor($C2->table . '_cat');
+            $cur            = dcCore::app()->con->openCursor($C2->cat_table);
             $cur->cat_title = $cattitle;
             $cur->cat_desc  = $catdesc;
 
@@ -373,7 +373,7 @@ if ($part == 'cat') {
             if ($exists) {
                 throw new Exception(__('Category with same name already exists.'));
             }
-            $cur            = dcCore::app()->con->openCursor($C2->table . '_cat');
+            $cur            = dcCore::app()->con->openCursor($C2->cat_table);
             $cur->cat_title = $cattitle;
             $cur->cat_desc  = $catdesc;