diff --git a/src/LaunchDarkly/GuzzleFeatureRequester.php b/src/LaunchDarkly/GuzzleFeatureRequester.php
index c6f41bce5..b8a144afe 100644
--- a/src/LaunchDarkly/GuzzleFeatureRequester.php
+++ b/src/LaunchDarkly/GuzzleFeatureRequester.php
@@ -6,6 +6,9 @@
 use \GuzzleHttp\Subscriber\Cache\CacheSubscriber;
 
 class GuzzleFeatureRequester implements FeatureRequester {
+
+    private $_client;
+
     function __construct($baseUri, $apiKey, $options) {
         $this->_client = new Client(array(
                                         'base_url' => $baseUri,