diff --git a/module/VuFind/src/VuFind/Session/Memcache.php b/module/VuFind/src/VuFind/Session/Memcache.php
index d87212ed6277a9cfe29e6895e037848fc46fc9d1..8d69116374d117ff3322e026d1b27f92951381a1 100644
--- a/module/VuFind/src/VuFind/Session/Memcache.php
+++ b/module/VuFind/src/VuFind/Session/Memcache.php
@@ -41,6 +41,11 @@ namespace VuFind\Session;
  */
 class Memcache extends AbstractBase
 {
+    /**
+     * Memcache connection
+     *
+     * @var \Memcache
+     */
     protected $connection = false;
 
     /**