diff --git a/core/lib/Drupal/Core/Database/Connection.php b/core/lib/Drupal/Core/Database/Connection.php
index 469579b..af91674 100644
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
@@ -1297,7 +1297,7 @@ public function quote($string, $parameter_type = \PDO::PARAM_STR) {
    * Prevents the database connection from being serialized.
    */
   public function __sleep() {
-    throw new \Exception('The database connection is not serializable. This probably means you are serializing an object that has an indirect reference to the database connection. Adjust your code so that is not necessary. Alternatively, look at DependencySerializationTrait as a temporary solution.');
+    throw new \LogicException('The database connection is not serializable. This probably means you are serializing an object that has an indirect reference to the database connection. Adjust your code so that is not necessary. Alternatively, look at DependencySerializationTrait as a temporary solution.');
   }
 
 }
diff --git a/core/lib/Drupal/Core/Site/Settings.php b/core/lib/Drupal/Core/Site/Settings.php
index 85810d6..a48946a 100644
--- a/core/lib/Drupal/Core/Site/Settings.php
+++ b/core/lib/Drupal/Core/Site/Settings.php
@@ -63,7 +63,7 @@ private function __clone() {
    * Prevents settings from being serialized.
    */
   public function __sleep() {
-    throw new \BadMethodCallException('Settings cannot be serialized.');
+    throw new \LogicException('Settings can not be serialized. This probably means you are serializing an object that has an indirect reference to the Settings object. Adjust your code so that is not necessary.');
   }
 
   /**