diff --git a/src/Elasticsearch/ConnectionPool/Selectors/SelectorInterface.php b/src/Elasticsearch/ConnectionPool/Selectors/SelectorInterface.php
index 72dfd195b..d29953942 100644
--- a/src/Elasticsearch/ConnectionPool/Selectors/SelectorInterface.php
+++ b/src/Elasticsearch/ConnectionPool/Selectors/SelectorInterface.php
@@ -16,7 +16,7 @@ interface SelectorInterface
     /**
      * Perform logic to select a single ConnectionInterface instance from the array provided
      *
-     * @param  ConnectionInterface[] $connections an array of ConnectionInterface instances to choose from
+     * @param  \Elasticsearch\Connections\ConnectionInterface[] $connections an array of ConnectionInterface instances to choose from
      *
      * @return \Elasticsearch\Connections\ConnectionInterface
      */
diff --git a/src/Elasticsearch/Serializers/SmartSerializer.php b/src/Elasticsearch/Serializers/SmartSerializer.php
index debb28c52..af89af2dc 100644
--- a/src/Elasticsearch/Serializers/SmartSerializer.php
+++ b/src/Elasticsearch/Serializers/SmartSerializer.php
@@ -2,6 +2,7 @@
 
 namespace Elasticsearch\Serializers;
 
+use Elasticsearch\Common\Exceptions;
 use Elasticsearch\Common\Exceptions\Serializer\JsonErrorException;
 
 /**
@@ -29,7 +30,7 @@ public function serialize($data)
         } else {
             $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
             if ($data === false) {
-                throw new RuntimeException("Failed to JSON encode: ".json_last_error());
+                throw new Exceptions\RuntimeException("Failed to JSON encode: ".json_last_error());
             }
             if ($data === '[]') {
                 return '{}';