diff --git a/src/BaseException.php b/src/BaseException.php
index f5f3943..522db55 100644
--- a/src/BaseException.php
+++ b/src/BaseException.php
@@ -130,18 +130,18 @@ public static function serializeToArray(\Throwable|BaseExceptionInterface|null $
      *    Key of an array: message, code, previous
      *    overridden the parameters $code and $previous,
      *    and other data is saved to the property `$data`.
-     * 3. $exception - BaseExceptionI
+     * 3. $exception - BaseExceptionInterface
      *    In this case, exception acts as container,
      *    but it does not inherit data from the $exception.
      * 4. $exception - \Throwable -
      *    In this case, exception acts as container,
      *    and inherits data from the $exception
      *
-     * @param BaseExceptionInterface|\Throwable|array<string, scalar|array<string, scalar>|scalar[]>|string $exception Exception data
+     * @param \Throwable|array<string, scalar|null|array<string, scalar>|scalar[]>|string $exception Exception data
      * @param int                                            $code      Code
      * @param \Throwable|null                                $previous  Previous or aggregate exception
      */
-    public function __construct(BaseExceptionInterface|\Throwable|array|string $exception, int $code = 0, ?\Throwable $previous = null)
+    public function __construct(\Throwable|array|string $exception, int $code = 0, ?\Throwable $previous = null)
     {
         $template               = '';
         $message                = '';
diff --git a/src/ClientException.php b/src/ClientException.php
index 865a42b..2213b60 100644
--- a/src/ClientException.php
+++ b/src/ClientException.php
@@ -11,8 +11,8 @@ class ClientException extends BaseException implements ClientAvailableInterface
 {
     /**
      * @param string $template
-     * @param array<string, scalar|scalar[]>  $parameters
-     * @param array<string, scalar|scalar[]>  $debugData
+     * @param array<string, scalar|null|scalar[]>  $parameters
+     * @param array<string, scalar|null|scalar[]>  $debugData
      */
     public function __construct(string $template, array $parameters = [], array $debugData = [])
     {