diff --git a/lib/SimpleSAML/Store/Redis.php b/lib/SimpleSAML/Store/Redis.php
index 8a5edfd4ca9b132e6a8b5fd5cb92047142f7fcf6..221b3d6287d18ed9a93f2ec6fda3382234ef604c 100644
--- a/lib/SimpleSAML/Store/Redis.php
+++ b/lib/SimpleSAML/Store/Redis.php
@@ -12,6 +12,8 @@ use \SimpleSAML\Store;
  */
 class Redis extends Store
 {
+    public $redis;
+
     /**
      * Initialize the Redis data store.
      */