diff --git a/app/Models/DatabaseDAO.php b/app/Models/DatabaseDAO.php
index 9d762a615..45049e8d7 100644
--- a/app/Models/DatabaseDAO.php
+++ b/app/Models/DatabaseDAO.php
@@ -241,7 +241,7 @@ class FreshRSS_DatabaseDAO extends Minz_ModelPdo {
 		$sqlite = null;
 
 		try {
-			$sqlite = new MinzPDOSQLite('sqlite:' . $filename);
+			$sqlite = new Minz_PdoSqlite('sqlite:' . $filename);
 		} catch (Exception $e) {
 			$error = 'Error while initialising SQLite copy: ' . $e->getMessage();
 			return self::stdError($error);
diff --git a/docs/en/developers/Minz/migrations.md b/docs/en/developers/Minz/migrations.md
index 6cc985c22..0f9628d70 100644
--- a/docs/en/developers/Minz/migrations.md
+++ b/docs/en/developers/Minz/migrations.md
@@ -18,7 +18,7 @@ Example:
 // File: app/migrations/2020_01_11_CreateFooTable.php
 class FreshRSS_Migration_2020_01_11_CreateFooTable {
 	public static function migrate() {
-		$pdo = new MinzPDOSQLite('sqlite:/some/path/db.sqlite');
+		$pdo = new Minz_PdoSqlite('sqlite:/some/path/db.sqlite');
 		$result = $pdo->exec('CREATE TABLE foos (bar TEXT)');
 		if ($result === false) {
 			$error = $pdo->errorInfo();
diff --git a/lib/Minz/ModelPdo.php b/lib/Minz/ModelPdo.php
index ad18dcb81..7c6c82129 100644
--- a/lib/Minz/ModelPdo.php
+++ b/lib/Minz/ModelPdo.php
@@ -1,8 +1,9 @@
 <?php
+
 /**
  * MINZ - Copyright 2011 Marien Fressinaud
  * Sous licence AGPL3 <http://www.gnu.org/licenses/>
-*/
+ */
 
 /**
  * La classe Model_sql représente le modèle interragissant avec les bases de données
@@ -63,12 +64,12 @@ class Minz_ModelPdo {
 						$dsn .= ';port=' . $dbServer['port'];
 					}
 					$driver_options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES utf8mb4';
-					$this->pdo = new MinzPDOMySql($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
+					$this->pdo = new Minz_PdoMysql($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
 					$this->pdo->setPrefix($db['prefix'] . $currentUser . '_');
 					break;
 				case 'sqlite':
 					$dsn = 'sqlite:' . join_path(DATA_PATH, 'users', $currentUser, 'db.sqlite');
-					$this->pdo = new MinzPDOSQLite($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
+					$this->pdo = new Minz_PdoSqlite($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
 					$this->pdo->setPrefix('');
 					break;
 				case 'pgsql':
@@ -79,7 +80,7 @@ class Minz_ModelPdo {
 					if (!empty($dbServer['port'])) {
 						$dsn .= ';port=' . $dbServer['port'];
 					}
-					$this->pdo = new MinzPDOPGSQL($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
+					$this->pdo = new Minz_PdoPgsql($dsn . $dsnParams, $db['user'], $db['password'], $driver_options);
 					$this->pdo->setPrefix($db['prefix'] . $currentUser . '_');
 					break;
 				default:
@@ -115,95 +116,3 @@ class Minz_ModelPdo {
 		self::$sharedCurrentUser = '';
 	}
 }
-
-abstract class MinzPDO extends PDO {
-	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
-		parent::__construct($dsn, $username, $passwd, $options);
-		$this->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
-	}
-
-	abstract public function dbType();
-
-	private $prefix = '';
-	public function prefix() { return $this->prefix; }
-	public function setPrefix($prefix) { $this->prefix = $prefix; }
-
-	private function autoPrefix($sql) {
-		return str_replace('`_', '`' . $this->prefix, $sql);
-	}
-
-	protected function preSql($statement) {
-		if (preg_match('/^(?:UPDATE|INSERT|DELETE)/i', $statement)) {
-			invalidateHttpCache();
-		}
-		return $this->autoPrefix($statement);
-	}
-
-	public function lastInsertId($name = null) {
-		if ($name != null) {
-			$name = $this->preSql($name);
-		}
-		return parent::lastInsertId($name);
-	}
-
-	public function prepare($statement, $driver_options = array()) {
-		$statement = $this->preSql($statement);
-		return parent::prepare($statement, $driver_options);
-	}
-
-	public function exec($statement) {
-		$statement = $this->preSql($statement);
-		return parent::exec($statement);
-	}
-
-	public function query($query, $fetch_mode = null, ...$fetch_mode_args) {
-		$query = $this->preSql($query);
-		return $fetch_mode ? parent::query($query, $fetch_mode, ...$fetch_mode_args) : parent::query($query);
-	}
-}
-
-class MinzPDOMySql extends MinzPDO {
-	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
-		parent::__construct($dsn, $username, $passwd, $options);
-		$this->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);
-	}
-
-	public function dbType() {
-		return 'mysql';
-	}
-
-	public function lastInsertId($name = null) {
-		return parent::lastInsertId();	//We discard the name, only used by PostgreSQL
-	}
-}
-
-class MinzPDOSQLite extends MinzPDO {
-	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
-		parent::__construct($dsn, $username, $passwd, $options);
-		$this->exec('PRAGMA foreign_keys = ON;');
-	}
-
-	public function dbType() {
-		return 'sqlite';
-	}
-
-	public function lastInsertId($name = null) {
-		return parent::lastInsertId();	//We discard the name, only used by PostgreSQL
-	}
-}
-
-class MinzPDOPGSQL extends MinzPDO {
-	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
-		parent::__construct($dsn, $username, $passwd, $options);
-		$this->exec("SET NAMES 'UTF8';");
-	}
-
-	public function dbType() {
-		return 'pgsql';
-	}
-
-	protected function preSql($statement) {
-		$statement = parent::preSql($statement);
-		return str_replace(array('`', ' LIKE '), array('"', ' ILIKE '), $statement);
-	}
-}
diff --git a/lib/Minz/Pdo.php b/lib/Minz/Pdo.php
new file mode 100644
index 000000000..d334c0533
--- /dev/null
+++ b/lib/Minz/Pdo.php
@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * MINZ - Copyright 2011 Marien Fressinaud
+ * Sous licence AGPL3 <http://www.gnu.org/licenses/>
+ */
+
+abstract class Minz_Pdo extends PDO {
+	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
+		parent::__construct($dsn, $username, $passwd, $options);
+		$this->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+	}
+
+	abstract public function dbType();
+
+	private $prefix = '';
+	public function prefix() { return $this->prefix; }
+	public function setPrefix($prefix) { $this->prefix = $prefix; }
+
+	private function autoPrefix($sql) {
+		return str_replace('`_', '`' . $this->prefix, $sql);
+	}
+
+	protected function preSql($statement) {
+		if (preg_match('/^(?:UPDATE|INSERT|DELETE)/i', $statement)) {
+			invalidateHttpCache();
+		}
+		return $this->autoPrefix($statement);
+	}
+
+	public function lastInsertId($name = null) {
+		if ($name != null) {
+			$name = $this->preSql($name);
+		}
+		return parent::lastInsertId($name);
+	}
+
+	public function prepare($statement, $driver_options = array()) {
+		$statement = $this->preSql($statement);
+		return parent::prepare($statement, $driver_options);
+	}
+
+	public function exec($statement) {
+		$statement = $this->preSql($statement);
+		return parent::exec($statement);
+	}
+
+	public function query($query, $fetch_mode = null, ...$fetch_mode_args) {
+		$query = $this->preSql($query);
+		return $fetch_mode ? parent::query($query, $fetch_mode, ...$fetch_mode_args) : parent::query($query);
+	}
+}
diff --git a/lib/Minz/PdoMysql.php b/lib/Minz/PdoMysql.php
new file mode 100644
index 000000000..3c5aa057c
--- /dev/null
+++ b/lib/Minz/PdoMysql.php
@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * MINZ - Copyright 2011 Marien Fressinaud
+ * Sous licence AGPL3 <http://www.gnu.org/licenses/>
+ */
+
+class Minz_PdoMysql extends MinzPdo {
+	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
+		parent::__construct($dsn, $username, $passwd, $options);
+		$this->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);
+	}
+
+	public function dbType() {
+		return 'mysql';
+	}
+
+	public function lastInsertId($name = null) {
+		return parent::lastInsertId();	//We discard the name, only used by PostgreSQL
+	}
+}
diff --git a/lib/Minz/PdoPgsql.php b/lib/Minz/PdoPgsql.php
new file mode 100644
index 000000000..7d1a1912b
--- /dev/null
+++ b/lib/Minz/PdoPgsql.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * MINZ - Copyright 2011 Marien Fressinaud
+ * Sous licence AGPL3 <http://www.gnu.org/licenses/>
+ */
+
+class Minz_PdoPgsql extends Minz_Pdo {
+	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
+		parent::__construct($dsn, $username, $passwd, $options);
+		$this->exec("SET NAMES 'UTF8';");
+	}
+
+	public function dbType() {
+		return 'pgsql';
+	}
+
+	protected function preSql($statement) {
+		$statement = parent::preSql($statement);
+		return str_replace(array('`', ' LIKE '), array('"', ' ILIKE '), $statement);
+	}
+}
diff --git a/lib/Minz/PdoSqlite.php b/lib/Minz/PdoSqlite.php
new file mode 100644
index 000000000..c577ad887
--- /dev/null
+++ b/lib/Minz/PdoSqlite.php
@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * MINZ - Copyright 2011 Marien Fressinaud
+ * Sous licence AGPL3 <http://www.gnu.org/licenses/>
+ */
+
+class Minz_PdoSqlite extends Minz_Pdo {
+	public function __construct($dsn, $username = null, $passwd = null, $options = null) {
+		parent::__construct($dsn, $username, $passwd, $options);
+		$this->exec('PRAGMA foreign_keys = ON;');
+	}
+
+	public function dbType() {
+		return 'sqlite';
+	}
+
+	public function lastInsertId($name = null) {
+		return parent::lastInsertId();	//We discard the name, only used by PostgreSQL
+	}
+}