diff --git a/wcfsetup/install/files/lib/system/database/table/column/DefaultFalseBooleanDatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/DefaultFalseBooleanDatabaseTableColumn.class.php
index 5be53e1bc6a..1aed91c838e 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/DefaultFalseBooleanDatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/DefaultFalseBooleanDatabaseTableColumn.class.php
@@ -12,19 +12,17 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class DefaultFalseBooleanDatabaseTableColumn extends TinyintDatabaseTableColumn
+final class DefaultFalseBooleanDatabaseTableColumn
 {
-    /**
-     * @inheritDoc
-     */
     public static function create($name)
     {
-        /** @var TinyintDatabaseTableColumn $column */
-        $column = parent::create($name);
-
-        return $column
+        return TinyintDatabaseTableColumn::create($name)
             ->length(1)
             ->notNull()
             ->defaultValue(0);
     }
+
+    private function __construct()
+    {
+    }
 }
diff --git a/wcfsetup/install/files/lib/system/database/table/column/DefaultTrueBooleanDatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/DefaultTrueBooleanDatabaseTableColumn.class.php
index 3c28ebd43df..fd269768170 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/DefaultTrueBooleanDatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/DefaultTrueBooleanDatabaseTableColumn.class.php
@@ -12,19 +12,17 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class DefaultTrueBooleanDatabaseTableColumn extends TinyintDatabaseTableColumn
+final class DefaultTrueBooleanDatabaseTableColumn
 {
-    /**
-     * @inheritDoc
-     */
     public static function create($name)
     {
-        /** @var TinyintDatabaseTableColumn $column */
-        $column = parent::create($name);
-
-        return $column
+        return TinyintDatabaseTableColumn::create($name)
             ->length(1)
             ->notNull()
             ->defaultValue(1);
     }
+
+    private function __construct()
+    {
+    }
 }
diff --git a/wcfsetup/install/files/lib/system/database/table/column/NotNullInt10DatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/NotNullInt10DatabaseTableColumn.class.php
index 78aace36866..0fe91517d58 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/NotNullInt10DatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/NotNullInt10DatabaseTableColumn.class.php
@@ -11,15 +11,19 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class NotNullInt10DatabaseTableColumn extends IntDatabaseTableColumn
+final class NotNullInt10DatabaseTableColumn
 {
     /**
      * @inheritDoc
      */
     public static function create($name)
     {
-        return parent::create($name)
+        return IntDatabaseTableColumn::create($name)
             ->notNull()
             ->length(10);
     }
+
+    private function __construct()
+    {
+    }
 }
diff --git a/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar191DatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar191DatabaseTableColumn.class.php
index 19d54c1807b..0c9b0a7ee1b 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar191DatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar191DatabaseTableColumn.class.php
@@ -11,15 +11,19 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class NotNullVarchar191DatabaseTableColumn extends VarcharDatabaseTableColumn
+final class NotNullVarchar191DatabaseTableColumn
 {
     /**
      * @inheritDoc
      */
     public static function create($name)
     {
-        return parent::create($name)
+        return VarcharDatabaseTableColumn::create($name)
             ->notNull()
             ->length(191);
     }
+
+    private function __construct()
+    {
+    }
 }
diff --git a/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar255DatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar255DatabaseTableColumn.class.php
index 24b565e9de8..874b89994a4 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar255DatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/NotNullVarchar255DatabaseTableColumn.class.php
@@ -11,15 +11,19 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class NotNullVarchar255DatabaseTableColumn extends VarcharDatabaseTableColumn
+final class NotNullVarchar255DatabaseTableColumn
 {
     /**
      * @inheritDoc
      */
     public static function create($name)
     {
-        return parent::create($name)
+        return VarcharDatabaseTableColumn::create($name)
             ->notNull()
             ->length(255);
     }
+
+    private function __construct()
+    {
+    }
 }
diff --git a/wcfsetup/install/files/lib/system/database/table/column/ObjectIdDatabaseTableColumn.class.php b/wcfsetup/install/files/lib/system/database/table/column/ObjectIdDatabaseTableColumn.class.php
index 33bd990abd5..3f3eb8adb6d 100644
--- a/wcfsetup/install/files/lib/system/database/table/column/ObjectIdDatabaseTableColumn.class.php
+++ b/wcfsetup/install/files/lib/system/database/table/column/ObjectIdDatabaseTableColumn.class.php
@@ -14,14 +14,18 @@
  * @package WoltLabSuite\Core\System\Database\Table\Column
  * @since   5.2
  */
-class ObjectIdDatabaseTableColumn extends NotNullInt10DatabaseTableColumn
+final class ObjectIdDatabaseTableColumn
 {
     /**
      * @inheritDoc
      */
     public static function create($name)
     {
-        return parent::create($name)
+        return NotNullInt10DatabaseTableColumn::create($name)
             ->autoIncrement();
     }
+
+    private function __construct()
+    {
+    }
 }