diff --git a/src/Core/PasswordPolicyValidator.php b/src/Core/PasswordPolicyValidator.php
index e8c5cc1e..9258f738 100644
--- a/src/Core/PasswordPolicyValidator.php
+++ b/src/Core/PasswordPolicyValidator.php
@@ -91,7 +91,7 @@ public function validatePassword(string $sPassword): ?StandardException
 
         if (
             $settings->getPasswordNeedSpecialCharacter() and
-            !preg_match('([\.,_@\~\(\)\!\#\$%\^\&\*\+=\-\\\/|:;`]+)', $sPassword)
+            !preg_match('([\.,_@\~\(\)\!\#\$%\?\^\&\*\+=\-\\\/|:;`]+)', $sPassword)
         ) {
             $sError = 'OXPS_PASSWORDPOLICY_PASSWORDSTRENGTH_ERROR_REQUIRESSPECIAL';
         }