diff --git a/src/AbstractExtendedPdo.php b/src/AbstractExtendedPdo.php
index 56b923de..51b84ded 100644
--- a/src/AbstractExtendedPdo.php
+++ b/src/AbstractExtendedPdo.php
@@ -29,7 +29,7 @@ abstract class AbstractExtendedPdo extends PDO implements ExtendedPdoInterface
      *
      * The internal PDO connection.
      *
-     * @var PDO
+     * @var PDO|null
      *
      */
     protected ?PDO $pdo = null;