diff --git a/datamodels/2.x/itop-portal-base/portal/src/Helper/RequestManipulatorHelper.php b/datamodels/2.x/itop-portal-base/portal/src/Helper/RequestManipulatorHelper.php
index 66dfa7d70..9fc14b04d 100644
--- a/datamodels/2.x/itop-portal-base/portal/src/Helper/RequestManipulatorHelper.php
+++ b/datamodels/2.x/itop-portal-base/portal/src/Helper/RequestManipulatorHelper.php
@@ -89,13 +89,13 @@ class RequestManipulatorHelper
 	 *
 	 * @param string $sKey
 	 * @param mixed  $default
-	 * @param int    $iFilter Default is FILTER_SANITIZE_STRING
+	 * @param int    $iFilter Default is FILTER_SANITIZE_SPECIAL_CHARS
 	 *
 	 * @return mixed|null
 	 *
 	 * @since 2.5.1
 	 */
-	public function ReadParam($sKey, $default = null, $iFilter = FILTER_SANITIZE_STRING)
+	public function ReadParam($sKey, $default = null, $iFilter = FILTER_SANITIZE_SPECIAL_CHARS)
 	{
 		if ($this->GetCurrentRequest()->query->has($sKey))
 		{