diff --git a/MysqliDb.php b/MysqliDb.php
index 6f1e957e..ab88d03a 100644
--- a/MysqliDb.php
+++ b/MysqliDb.php
@@ -9,7 +9,7 @@
  * @author    Alexander V. Butenko <a.butenka@gmail.com>
  * @copyright Copyright (c) 2010-2017
  * @license   http://opensource.org/licenses/gpl-3.0.html GNU Public License
- * @link      http://github.com/joshcam/PHP-MySQLi-Database-Class 
+ * @link      http://github.com/joshcam/PHP-MySQLi-Database-Class
  * @version   2.9.3
  */
 
@@ -243,7 +243,7 @@ class MysqliDb
      * @var string the name of a default (main) mysqli connection
      */
     public $defConnectionName = 'default';
-    
+
     public $autoReconnect = true;
     protected $autoReconnectCount = 0;
 
@@ -306,7 +306,7 @@ public function connect($connectionName = 'default')
     {
         if(!isset($this->connectionsSettings[$connectionName]))
             throw new Exception('Connection profile not set');
-        
+
         $pro = $this->connectionsSettings[$connectionName];
         $params = array_values($pro);
         $charset = array_pop($params);
@@ -551,9 +551,9 @@ private function queryUnprepared($query)
      * @return string Contains the returned rows from the query.
      */
     public function rawAddPrefix($query){
-        $query = str_replace(PHP_EOL, null, $query);
+        $query = str_replace(PHP_EOL, '', $query);
         $query = preg_replace('/\s+/', ' ', $query);
-        preg_match_all("/(from|into|update|join) [\\'\\´]?([a-zA-Z0-9_-]+)[\\'\\´]?/i", $query, $matches);
+        preg_match_all("/(from|into|update|join|describe) [\\'\\´]?([a-zA-Z0-9_-]+)[\\'\\´]?/i", $query, $matches);
         list($from_table, $from, $table) = $matches;
 
         return str_replace($table[0], self::$prefix.$table[0], $query);
@@ -724,10 +724,10 @@ public function withTotalCount()
     /**
      * A convenient SELECT * function.
      *
-     * @param string    $tableName   The name of the database table to work with.
-     * @param int|array $numRows     Array to define SQL limit in format Array ($offset, $count)
-     *                               or only $count
-     * @param string    $columns     Desired columns
+     * @param string       $tableName The name of the database table to work with.
+     * @param int|array    $numRows   Array to define SQL limit in format Array ($offset, $count)
+     *                                or only $count
+     * @param string|array $columns   Desired columns
      *
      * @return array|MysqliDb Contains the returned rows from the select query.
      * @throws Exception
@@ -766,8 +766,8 @@ public function get($tableName, $numRows = null, $columns = '*')
     /**
      * A convenient SELECT * function to get one record.
      *
-     * @param string $tableName The name of the database table to work with.
-     * @param string $columns   Desired columns
+     * @param string       $tableName The name of the database table to work with.
+     * @param string|array $columns   Desired columns
      *
      * @return array Contains the returned rows from the select query.
      * @throws Exception
@@ -2096,7 +2096,7 @@ public function getLastError()
      *
      * @return int
      */
-    public function getLastErrno () {
+    public function getLastErrno() {
         return $this->_stmtErrno;
     }
 
@@ -2464,8 +2464,8 @@ protected function _buildJoin () {
             else
                 $joinStr = $joinTable;
 
-            $this->_query .= " " . $joinType. " JOIN " . $joinStr . 
-                (false !== stripos($joinCondition, 'using') ? " " : " on ") 
+            $this->_query .= " " . $joinType. " JOIN " . $joinStr .
+                (false !== stripos($joinCondition, 'using') ? " " : " on ")
                 . $joinCondition;
 
             // Add join and query
diff --git a/dbObject.php b/dbObject.php
index 304630a3..70355285 100644
--- a/dbObject.php
+++ b/dbObject.php
@@ -451,7 +451,7 @@ private function with ($objectName) {
         if (!property_exists ($this, 'relations') || !isset ($this->relations[$objectName]))
             die ("No relation with name $objectName found");
 
-        $this->_with[$objectName] = $this->relations[$objectName];
+        $this->_with[MysqliDb::$prefix.$objectName] = $this->relations[$objectName];
 
         return $this;
     }
diff --git a/tests/dbObjectTests.php b/tests/dbObjectTests.php
index bc29ee6d..e9cd9c42 100644
--- a/tests/dbObjectTests.php
+++ b/tests/dbObjectTests.php
@@ -41,7 +41,7 @@
         Array ('login' => 'user2',
                'customerId' => 10,
                'firstName' => 'Mike',
-               'lastName' => NULL,
+               'lastName' => null,
                'password' => $db->func('SHA1(?)',Array ("secretpassword2+salt")),
                'expires' => $db->now('+1Y'),
                'loginCount' => $db->inc(2)
diff --git a/tests/mysqliDbTests.php b/tests/mysqliDbTests.php
index dd74b578..61449ba5 100644
--- a/tests/mysqliDbTests.php
+++ b/tests/mysqliDbTests.php
@@ -61,7 +61,7 @@ function pretty_print($array) {
         Array ('login' => 'user2',
                'customerId' => 10,
                'firstName' => 'Mike',
-               'lastName' => NULL,
+               'lastName' => null,
                'password' => $db->func('SHA1(?)',Array ("secretpassword2+salt")),
                'createdAt' => $db->now(),
                'updatedAt' => $db->now(),
@@ -312,7 +312,7 @@ function createTable ($name, $data) {
     exit;
 }
 ///
-$db->where ("lastName", NULL, '<=>');
+$db->where ("lastName", null, '<=>');
 $r = $db->get("users");
 if ($db->count != 1) {
     echo "Invalid users count on null where()";