diff --git a/authorizationdb.php b/authorizationdb.php
index 3ec3a3b..770fb3c 100644
--- a/authorizationdb.php
+++ b/authorizationdb.php
@@ -15,6 +15,8 @@ class authorizationdb extends authorization
   private $separator = "/";
   /** Database PDO connector */
   private $db = null;
+  /** The prefix for the table */
+  public $tableprefix = "";
 
   /** Establish a connexion to the authorization database
       @param string $dsn The DSN needed to connect to database
@@ -28,6 +30,7 @@ class authorizationdb extends authorization
     // Define the structure of the table in the database
     $this->db = new dblayer ($dsn, $username, $password, $driver_options);
     $this->db->table = "domframework_authorization";
+    $this->db->tableprefix = $this->tableprefix;
     $this->db->fields = array (
                     "object"=>array ("varchar", "255", "not null"),
                     "ownerid"=>array ("integer", "not null"),
@@ -43,7 +46,7 @@ class authorizationdb extends authorization
     if ($this->db === null)
       throw new Exception (_("Database to authorize is not connected"), 500);
     $tables = $this->db->listTables ();
-    if (!in_array ($this->db->table, $tables))
+    if (!in_array ($this->db->tableprefix.$this->db->table, $tables))
     {
       $this->db->createTable ();
       $first = array ("object"=>"/", "ownerid"=>0, "groupid"=>0,
diff --git a/dblayer.php b/dblayer.php
index a1d027e..a133fc7 100644
--- a/dblayer.php
+++ b/dblayer.php
@@ -35,9 +35,9 @@ class dblayer extends PDO
 {
   /** The table name to use */
   public $table = null;
-  /** The prefix text to prepend to table name (Should finish by _)
+  /** The tableprefix text to prepend to table name (Should finish by _)
       Just allow chars ! */
-  public $prefix = "";
+  public $tableprefix = "";
   /** The fields with the definition of type, and special parameters */
   public $fields = array ();
   /** The primary field */
@@ -166,7 +166,8 @@ class dblayer extends PDO
       if (file_exists ($file) && ! is_writeable ($file))
         throw new Exception (_("The SQLite database file is write protected"),
                              500);
-      if (function_exists ("posix_getuid") && fileowner ($file) === posix_getuid ())
+      if (function_exists ("posix_getuid") &&
+          fileowner ($file) === posix_getuid ())
         chmod ($file, 0666);
       // Force ForeignKeys support (disabled by default)
       $this->db->exec("PRAGMA foreign_keys = ON");
@@ -255,7 +256,8 @@ class dblayer extends PDO
     {
       $table = $data[0];
       $column = $data[1];
-      $req = "SELECT $column FROM `$this->prefix$table` WHERE $column=:$column";
+      $req = "SELECT $column FROM `$this->tableprefix$table` ".
+             "WHERE $column=:$column";
       if ($this->debug) echo "DEBUG : $req\n";
       $st = $this->db->prepare ($req);
       $val = $datasOK[$foreign];
@@ -281,7 +283,7 @@ class dblayer extends PDO
                                       $column), 405);
     }
 
-    $req = "INSERT INTO `$this->prefix$this->table` ";
+    $req = "INSERT INTO `$this->tableprefix$this->table` ";
     $req .= "(".implode (",", array_keys ($datasOK)).")";
     $req .= " VALUES ";
     $req .= "(:".implode (",:", array_keys ($datasOK)).")";
@@ -344,7 +346,7 @@ class dblayer extends PDO
 
     $req = "SELECT ";
     $req .= implode (",", $display);
-    $req .= " FROM `$this->prefix$this->table`";
+    $req .= " FROM `$this->tableprefix$this->table`";
     if ($select !== null)
     {
       $req .= " WHERE ";
@@ -477,7 +479,8 @@ class dblayer extends PDO
     {
       $table = $data[0];
       $column = $data[1];
-      $req = "SELECT $column FROM `$this->prefix$table` WHERE $column=:$column";
+      $req = "SELECT $column FROM `$this->tableprefix$table` ".
+             "WHERE $column=:$column";
       if ($this->debug) echo "DEBUG : $req\n";
       $st = $this->db->prepare ($req);
       $val = $datasOK[$foreign];
@@ -504,7 +507,7 @@ class dblayer extends PDO
     }
 
     $datasOK[$this->primary] = $updatekey;
-    $req = "UPDATE `".$this->prefix."$this->table` SET ";
+    $req = "UPDATE `".$this->tableprefix."$this->table` SET ";
     $i = 0;
     foreach ($datasOK as $key=>$val)
     {
@@ -557,7 +560,7 @@ class dblayer extends PDO
   {
     if ($this->db === null)
       throw new Exception ("Database not connected");
-    $req = "DELETE FROM `$this->prefix$this->table` ";
+    $req = "DELETE FROM `$this->tableprefix$this->table` ";
     $req .= "WHERE $this->primary = :primary";
     $st = $this->db->prepare ($req);
     if ($this->debug) echo "DEBUG : $req\n";
@@ -600,7 +603,7 @@ class dblayer extends PDO
     switch ($this->db->getAttribute(PDO::ATTR_DRIVER_NAME))
     {
     case "sqlite":
-      $sql = "CREATE TABLE `$this->prefix$this->table` (\n";
+      $sql = "CREATE TABLE `$this->tableprefix$this->table` (\n";
       $i = 0;
       foreach ($this->fields as $field=>$params)
       {
@@ -681,7 +684,7 @@ class dblayer extends PDO
       $sql .=")";
       break;
     case "mysql":
-      $sql = "CREATE TABLE `$this->prefix$this->table` (\n";
+      $sql = "CREATE TABLE `$this->tableprefix$this->table` (\n";
       $i = 0;
       foreach ($this->fields as $field=>$params)
       {
@@ -760,7 +763,7 @@ class dblayer extends PDO
       $sql .=")  ENGINE=InnoDB DEFAULT CHARSET=utf8;";
       break;
     case "pgsql":
-      $sql = "CREATE TABLE \"$this->prefix$this->table\" (\n";
+      $sql = "CREATE TABLE \"$this->tableprefix$this->table\" (\n";
       $i = 0;
       foreach ($this->fields as $field=>$params)
       {