diff --git a/sources/Forms/IO/Converter/StringToBooleanConverter.php b/sources/Forms/IO/Converter/StringToBooleanConverter.php
deleted file mode 100644
index 2e20a95cfa..0000000000
--- a/sources/Forms/IO/Converter/StringToBooleanConverter.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/*
- * @copyright   Copyright (C) 2010-2025 Combodo SARL
- * @license     http://opensource.org/licenses/AGPL-3.0
- */
-
-namespace Combodo\iTop\Forms\IO\Converter;
-
-use Combodo\iTop\Forms\IO\Format\BooleanIOFormat;
-
-/**
- * OQL expression to class converter.
- */
-class StringToBooleanConverter extends AbstractConverter
-{
-	/** @inheritdoc  */
-	public function Convert(mixed $oData): ?BooleanIOFormat
-	{
-		return new BooleanIOFormat($oData);
-	}
-}